xnnpack.h

// Copyright (c) Facebook, Inc. and its affiliates.
// All rights reserved.
//
// Copyright 2019 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.

#pragma once

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#include <pthreadpool.h>

#ifdef __cplusplus
extern "C" {
#endif

/// The number of bytes XNNPACK may read beyond array bounds.
/// The caller must allocate at least this many extra bytes after the tensor data passed to XNNPACK.
///
/// Note: XNNPACK reads, but never writes beyond array bounds.
#if XNN_ARCH_HEXAGON
#define XNN_EXTRA_BYTES 128
#else
#define XNN_EXTRA_BYTES 16
#endif  // XNN_ARCH_HEXAGON

/// Maximum number of dimensions in tensor shape.
#define XNN_MAX_TENSOR_DIMS 6

/// A value ID that cannot be valid.
#define XNN_INVALID_VALUE_ID UINT32_MAX

/// Allow sparse inference in a Runtime.
///
/// Note: this flag is a hint to XNNPACK that it should consider sparse inference, but does not guarantee it.
#define XNN_FLAG_HINT_SPARSE_INFERENCE 0x00000001

/// Allow IEEE FP16 inference in a Runtime.
///
/// Note: this flag hints XNNPACK to consider IEEE FP16 inference, but does not guarantee it.
#define XNN_FLAG_HINT_FP16_INFERENCE 0x00000002

/// Force IEEE FP16 inference in a Runtime, and fail if FP16 inference is not possible.
///
/// Note: this flag guarantees that XNNPACK will use IEEE FP16 inference, or fail to create the Runtime object.
/// Warning: on x86 systems FP16 computations will be emulated at a substantial performance cost.
#define XNN_FLAG_FORCE_FP16_INFERENCE 0x00000004

/// Enable timing of each operator's runtime.
#define XNN_FLAG_BASIC_PROFILING 0x00000008

/// Enable the just-in-time compiler.
#define XNN_FLAG_JIT 0x00000010

/// The convolution operator represents a depthwise convolution, and use HWGo layout for filters.
#define XNN_FLAG_DEPTHWISE_CONVOLUTION 0x00000001

/// Assume transposed weights in a fully connected operator.
#define XNN_FLAG_TRANSPOSE_WEIGHTS 0x00000001

/// The operator assumes NHWC layout for the input, regardless of the output layout.
#define XNN_FLAG_INPUT_NHWC 0x00000002

/// Match "SAME" padding in TensorFlow. Exact padding values are computed dynamically depending on input size.
#define XNN_FLAG_TENSORFLOW_SAME_PADDING 0x00000004

/// Assume transposed weights in a batch matrix multiply operator.
#define XNN_FLAG_TRANSPOSE_B XNN_FLAG_TRANSPOSE_WEIGHTS

/// Assume transposed input in a batch matrix multiply operator.
#define XNN_FLAG_TRANSPOSE_A 0x00000002

/// Implicitly flatten and reshape input of a Fully Connected operator into a 2D tensor.
#define XNN_FLAG_TENSORFLOW_RESHAPE_2D 0x00000004

/// Match behaviour of TensorFlow 1.x.
#define XNN_FLAG_TENSORFLOW_LEGACY_MODE 0x00000004

/// Static weights of the FP16 operator are in FP32 format.
#define XNN_FLAG_FP32_STATIC_WEIGHTS 0x00000008

/// Static biases of the FP16 operator are in FP32 format.
#define XNN_FLAG_FP32_STATIC_BIASES 0x00000080

/// Align corners of input and output images in resize operations.
#define XNN_FLAG_ALIGN_CORNERS 0x00000008

/// Yield worker threads of the thread pool to the system scheduler after the inference.
#define XNN_FLAG_YIELD_WORKERS 0x00000010

/// Use transient indirection buffer to reduce memory footprint
#define XNN_FLAG_TRANSIENT_INDIRECTION_BUFFER 0x00000020

/// Retain reduced dimensions with length 1.
#define XNN_FLAG_KEEP_DIMS 0x00000040

// Next unused flag value: 0x00000200.

/// The number of entries in an array of xnn_quantization_params that XNNPACK may read beyond array bounds.
/// The caller must allocate at least this many extra xnn_quantization_params before passing the array to XNNPACK.
///
/// Note: XNNPACK reads, but never writes beyond array bounds.
#define XNN_EXTRA_QUANTIZATION_PARAMS 15

/// The minimum blocksize for blockwise quantized operators.
#define XNN_MIN_BLOCKSIZE 32

#ifdef __GNUC__
#define XNN_DEPRECATED __attribute__((deprecated))
#else
#define XNN_DEPRECATED
#endif

struct xnn_quantization_params {
  int32_t zero_point;
  float scale;
};

/// Status code for any XNNPACK function call.
enum xnn_status {
  /// The call succeeded, and all output arguments now contain valid data.
  xnn_status_success = 0,
  xnn_status_uninitialized = 1,
  xnn_status_invalid_parameter = 2,
  xnn_status_invalid_state = 3,
  xnn_status_unsupported_parameter = 4,
  xnn_status_unsupported_hardware = 5,
  xnn_status_out_of_memory = 6,
  xnn_status_reallocation_required = 7,
  xnn_status_deprecated = 8,
};

struct xnn_allocator {
  /// User-specified pointer that will be passed as-is to all functions in this structure.
  void* context;
  /// Pointer to a function to be called for general memory allocation.
  ///
  /// @param context - The user-specified pointer from xnn_allocator structure.
  /// @param size - The size of the memory block to allocate, in bytes.
  ///
  /// @returns Pointer to the allocated memory block of at least @ref size bytes.
  ///          If allocation fails, the function must return NULL.
  void* (*allocate)(void* context, size_t size);
  /// Pointer to a function to be called for general memory re-allocation, i.e. to increase or shrink a previously
  /// allocated memory block. The content of the old memory block is copied to the new memory block.
  ///
  /// @param context - The user-specified pointer from xnn_allocator structure.
  /// @param pointer - Pointer to a memory block allocated by @ref allocate or @ref reallocate functions. Can be NULL.
  ///                  If the pointer is NULL, the @ref reallocate call is equivalent to an @ref allocate call.
  /// @param size - The new size of the memory block to allocate, in bytes.
  ///
  /// @returns Pointer to the newly allocated memory block of at least @ref size bytes with the content of the previous
  ///          memory block.
  ///          If allocation fails, the function must return NULL, but must not release the previous memory block.
  void* (*reallocate)(void* context, void* pointer, size_t size);
  /// Pointer to a function to be called for general memory de-allocation.
  ///
  /// @param context - The user-specified pointer from xnn_allocator structure.
  /// @param pointer - Pointer to a memory block allocated by @ref allocate or @ref reallocate functions. Can be NULL.
  ///                  If the pointer is NULL, the @ref deallocate call is a no-op.
  void (*deallocate)(void* context, void* pointer);
  /// Pointer to a function to be called for aligned memory allocation.
  ///
  /// @param context - The user-specified pointer from xnn_allocator structure.
  /// @param alignment - The alignment of the memory block to allocate, in bytes. Alignment is always a power-of-2.
  /// @param size - The size of the memory block to allocate, in bytes.
  ///
  /// @returns Pointer to the allocated memory block of at least @ref size bytes.
  ///          If allocation fails, the function must return NULL.
  void* (*aligned_allocate)(void* context, size_t alignment, size_t size);
  /// Pointer to a function to be called for aligned memory deallocation.
  ///
  /// @param context - The user-specified pointer from xnn_allocator structure.
  /// @param pointer - Pointer to a memory block allocated by @ref aligned_allocate function. Can be NULL.
  ///                  If the pointer is NULL, the @ref aligned_deallocate call is a no-op.
  void (*aligned_deallocate)(void* context, void* pointer);
};

/// Initialize XNNPACK library.
///
/// XNNPACK must be successfully initialized before use. During initialization, XNNPACK populates internal structures
/// depending on the host processor. Initialization can be time-consuming.
///
/// @param[in] allocator - structure with function pointers to be use for memory allocation and de-allocation.
///                        If this argument is NULL, system-provided memory management functions (e.g. malloc/free)
///                        will be used.
///
/// @retval xnn_status_success - XNNPACK is successfully initialized and ready to use.
/// @retval xnn_status_out_of_memory - initialization failed due to out-of-memory condition.
/// @retval xnn_status_unsupported_hardware - initialization failed because the host processor does not satisfy the
///                                           minimum hardware requirements for XNNPACK. E.g. this may happen on x86
///                                           processors without SSE2 extension, or on 32-bit ARM processors without
///                                           the NEON SIMD extension.
enum xnn_status xnn_initialize(const struct xnn_allocator* allocator);

/// Deinitialize XNNPACK library.
///
/// To avoid memory and resource leaks, users must call xnn_deinitialize once for each successful xnn_initialize call.
///
/// @retval xnn_status_success - deinitialization call succeeded.
enum xnn_status xnn_deinitialize(void);

/// Get the microkernel implementation build identifier's data.
///
/// That identifier will be unique for the current set of microkernels implementations.
///
/// @returns A pointer to the current identifier's data.
const void* xnn_experimental_get_build_identifier_data();

/// Get the microkernel implementation build identifier's data size.
///
/// @returns The size in bytes of the identifier's data.
size_t xnn_experimental_get_build_identifier_size();

/// Check whether the given data matches this version's identifier.
///
/// @returns The size in bytes of the identifier's data.
bool xnn_experimental_check_build_identifier(const void* data, size_t size);

/// Subgraph is an abstract representation of a neural network model.
/// Subgraph objects are used to define Values (tensors) and Nodes (operators) comprising the model.
typedef struct xnn_subgraph* xnn_subgraph_t;

/// Create a empty Subgraph object.
///
/// @param external_value_ids - number of Value IDs to reserve for communication with external graph representation.
///                             The Subgraph object would avoid creating internal Value IDs in the
///                             [0, reserved_value_ids-1] range.
/// @param flags - binary features of the subgraph. No supported flags are currently defined.
/// @param subgraph_out - pointer to the variable that will be initialized with a handle to the Subgraph object upon
///                       successful return.
enum xnn_status xnn_create_subgraph(
  uint32_t external_value_ids,
  uint32_t flags,
  xnn_subgraph_t* subgraph_out);

/// Destroy a Subgraph object, as well as Values, and Nodes associated with the subgraph.
///
/// @param subgraph - the Subgraph object to destroy.
enum xnn_status xnn_delete_subgraph(
  xnn_subgraph_t subgraph);

#define XNN_VALUE_FLAG_EXTERNAL_INPUT  0x00000001
#define XNN_VALUE_FLAG_EXTERNAL_OUTPUT 0x00000002
#define XNN_VALUE_FLAG_PERSISTENT      0x00000004

#define XNN_INVALID_VALUE_ID UINT32_MAX

/// Type of elements in a Value object.
enum xnn_datatype {
  /// Invalid data type. Valid Values never have this datatype.
  xnn_datatype_invalid = 0,
  /// IEEE754 single-precision floating-point.
  xnn_datatype_fp32 = 1,
  /// IEEE754 half-precision floating-point.
  xnn_datatype_fp16 = 2,
  /// Quantized 8-bit signed integer with shared per-Value quantization
  /// parameters.
  xnn_datatype_qint8 = 3,
  /// Quantized 8-bit unsigned integer with shared per-Value quantization
  /// parameters.
  xnn_datatype_quint8 = 4,
  /// Quantized 32-bit signed integer with shared per-Value quantization
  /// parameters.
  xnn_datatype_qint32 = 5,
  /// Quantized 8-bit signed integer with shared per-channel quantization
  /// parameters.
  xnn_datatype_qcint8 = 6,
  /// Quantized 32-bit signed integer with shared per-channel quantization
  /// parameters.
  xnn_datatype_qcint32 = 7,
  /// Quantized 4-bit signed integer with shared per-channel quantization
  /// parameters.
  xnn_datatype_qcint4 = 8,
  /// Dynamically quantized 8-bit signed integer with per-batch quantization
  /// parameters.
  xnn_datatype_qdint8 = 9,
  /// Dynamically quantized 8-bit signed integers packed with their per-row
  /// quantization parameters.
  xnn_datatype_qpint8 = 10,
  /// 32-bit signed integers.
  xnn_datatype_int32 = 11,
  /// Quantized 4-bit signed integer with shared per-channel-block quantization
  /// parameters.
  xnn_datatype_qbint4 = 12,
  /// IEEE754 single-precision packed floating-point.
  xnn_datatype_pfp32 = 13,
  /// BFloat16, i.e. the upper 16 bits of a float32.
  xnn_datatype_bf16 = 14,
  /// Dynamically quantized 8-bit unsigned integer with per-batch quantization
  /// parameters.
  xnn_datatype_qduint8 = 15,
  /// IEEE754 half-precision packed floating-point.
  xnn_datatype_pfp16 = 16,
  /// Packed quantized 8-bit unsigned integer with shared per-Value quantization
  /// parameters.
  xnn_datatype_pqint8 = 17,
};

/// Define a tensor-type Value and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Value.
/// @param datatype - type of the tensor elements.
/// @param num_dims - number of dimensions in the shape.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
/// @param data - pointer to static data used for tensor initialization. If the tensor is not statically initialized,
///               this pointer must be is NULL. If non-NULL, the life-time of the static data must exceed the life-time
///               of the Subgraph object, and of any Runtime objects created from the Subgraph.
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. If the external ID is XNN_INVALID_VALUE_ID, an internal ID will be
///                      created for the Value.
/// @param flags - binary features of the Value. Supported values are any combination of XNN_VALUE_FLAG_EXTERNAL_INPUT
///                and XNN_VALUE_FLAG_EXTERNAL_OUTPUT.
/// @param id_out - pointer to the variable that will be initialized with the Value ID upon successful return. If a
///                 valid @a external_id was provided, the variable will be initialized with the @a external_id value.
enum xnn_status xnn_define_tensor_value(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  size_t num_dims,
  const size_t* dims,
  const void* data,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

/// Define a quantized tensor-type Value and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Value.
/// @param datatype - type of the tensor elements.
/// @param zero_point - offset from zero to subtract from the quantized elements in the Value.
/// @param scale - multiplication factor to convert quantized elements to real representation.
/// @param num_dims - number of dimensions in the shape.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
/// @param data - pointer to static data used for tensor initialization. If the tensor is not statically initialized,
///               this pointer must be is NULL. If non-NULL, the life-time of the static data must exceed the life-time
///               of the Subgraph object, and of any Runtime objects created from the Subgraph.
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. If the external ID is XNN_INVALID_VALUE_ID, an internal ID will be
///                      created for the Value.
/// @param flags - binary features of the Value. Supported values are any combination of XNN_VALUE_FLAG_EXTERNAL_INPUT
///                and XNN_VALUE_FLAG_EXTERNAL_OUTPUT.
/// @param id_out - pointer to the variable that will be initialized with the Value ID upon successful return. If a
///                 valid @a external_id was provided, the variable will be initialized with the @a external_id value.
enum xnn_status xnn_define_quantized_tensor_value(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  int32_t zero_point,
  float scale,
  size_t num_dims,
  const size_t* dims,
  const void* data,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

enum xnn_status xnn_define_channelwise_quantized_tensor_value(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  const float* scale,
  size_t num_dims,
  size_t channel_dim,
  const size_t* dims,
  const void* data,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

/// Validate the dimensions, channel_dim, zero point, datatype, and scale of a quantized tensor-type.
///
/// @param datatype - type of the tensor elements.
/// @param zero_point - offset from zero to subtract from the quantized elements in the Value.
/// @param scale - multiplication factor to convert quantized elements to real representation.
/// @param num_dims - number of dimensions in the shape.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
enum xnn_status xnn_validate_quantized_tensor(
  enum xnn_datatype datatype,
  int32_t zero_point,
  float scale,
  size_t num_dims,
  const size_t* dims);

/// Validate the dimensions, channel_dim, zero point, datatype, and scales of a channelwise quantized tensor-type.
///
/// @param datatype - type of the tensor elements.
/// @param zero_point - offset from zero to subtract from the quantized elements in the Value.
/// @param scale - per-channel multiplication factors to convert quantized elements to real representation.
/// @param num_dims - number of dimensions in the shape.
/// @param channel_dim - index of the channel dimension in the tensor with per-channel quantization parameters.
///                      Typically this is the first dimension (dimension #0) of the filter tensors in the Convolution,
///                      Deconvolution, and Fully Connected operators and the last dimension of the filter tensors in
///                      the Depthwise Convolution operators.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
enum xnn_status xnn_validate_channelwise_quantized_tensor(
  enum xnn_datatype datatype,
  int32_t zero_point,
  const float* scale,
  size_t num_dims,
  size_t channel_dim,
  const size_t* dims);

/// Define a channelwise quantized tensor-type Value and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Value.
/// @param datatype - type of the tensor elements.
/// @param zero_point - offset from zero to subtract from the quantized elements in the Value.
/// @param scale - per-channel multiplication factors to convert quantized elements to real representation.
/// @param num_dims - number of dimensions in the shape.
/// @param channel_dim - index of the channel dimension in the tensor with per-channel quantization parameters.
///                      Typically this is the first dimension (dimension #0) of the filter tensors in the Convolution,
///                      Deconvolution, and Fully Connected operators and the last dimension of the filter tensors in
///                      the Depthwise Convolution operators.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
/// @param data - pointer to static data used for tensor initialization. If the tensor is not statically initialized,
///               this pointer must be is NULL. If non-NULL, the life-time of the static data must exceed the life-time
///               of the Subgraph object, and of any Runtime objects created from the Subgraph.
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. If the external ID is XNN_INVALID_VALUE_ID, an internal ID will be
///                      created for the Value.
/// @param flags - binary features of the Value. Supported values are any combination of XNN_VALUE_FLAG_EXTERNAL_INPUT
///                and XNN_VALUE_FLAG_EXTERNAL_OUTPUT.
/// @param id_out - pointer to the variable that will be initialized with the Value ID upon successful return. If a
///                 valid @a external_id was provided, the variable will be initialized with the @a external_id value.
enum xnn_status xnn_define_channelwise_quantized_tensor_value_v2(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  int32_t zero_point,
  const float* scale,
  size_t num_dims,
  size_t channel_dim,
  const size_t* dims,
  const void* data,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

/// Define a blockwise quantized tensor-type Value and add it to a Subgraph.
/// @param block_size - size of a block in the tensor with blockwise quantization parameters. Block is defined as
///                     number of input channel element per output channel.
///                     For Fully connected operators with 2d filters of size [output_channels, input_channels],
///                     expecting number of scale values to be = output_channels * (input_channels / block_size).
enum xnn_status xnn_define_blockwise_quantized_tensor_value(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  int32_t zero_point,
  const uint16_t* scale,
  size_t num_dims,
  size_t channel_dim,
  size_t block_size,
  const size_t* dims,
  const void* data,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

/// Define a dynamically quantized tensor-type Value and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Value.
/// @param datatype - type of the tensor elements.
/// @param num_dims - number of dimensions in the shape.
/// @param num_non_batch_dims - number of non-batch dimensions in the shape. The leading (num_dims - num_non_batch_dims)
///                             dimensions will be flattened and treated as batch size. A set of quantization parameters
///                             will be calculated for each batch element.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. If the external ID is XNN_INVALID_VALUE_ID, an internal ID will be
///                      created for the Value.
/// @param flags - binary features of the Value. No supported flags are currently defined.
/// @param id_out - pointer to the variable that will be initialized with the Value ID upon successful return. If a
///                 valid @a external_id was provided, the variable will be initialized with the @a external_id value.
enum xnn_status xnn_define_dynamically_quantized_tensor_value(
  xnn_subgraph_t subgraph,
  enum xnn_datatype datatype,
  size_t num_dims,
  size_t num_nonbatch_dims,
  const size_t* dims,
  uint32_t external_id,
  uint32_t flags,
  uint32_t* id_out);

/// Type of unary operation
enum xnn_unary_operator {
  xnn_unary_invalid = -1,
  xnn_unary_abs,
  // This is a GELU approximation that mimics the approximation:
  //
  //   0.5 * x * (1 + tanh(sqrt(2/π) * (x + 0.044715 * x^3)))
  //
  // which differs sufficiently from the exact GELU (`xnn_unary_gelu` below) to
  // cause problems in some models. Note that both the approximation and the
  // exact GELU use the same order rational approximation polynomials and are
  // therefore both equally fast.
  xnn_unary_approxgelu,
  xnn_unary_bankers_rounding,
  xnn_unary_ceiling,
  xnn_unary_clamp,
  xnn_unary_convert,
  xnn_unary_elu,
  xnn_unary_exp,
  xnn_unary_floor,
  xnn_unary_gelu,
  xnn_unary_hardswish,
  xnn_unary_leaky_relu,
  xnn_unary_log,
  xnn_unary_negate,
  xnn_unary_reciprocal_square_root,
  xnn_unary_sigmoid,
  xnn_unary_square_root,
  xnn_unary_square,
  xnn_unary_tanh,
  // The following operators are experimental and may be removed.
  xnn_unary_bitwise_not,
  xnn_unary_cosine,
  xnn_unary_count_leading_zeros,
  xnn_unary_cube_root,
  xnn_unary_popcount,
  xnn_unary_sign,
  xnn_unary_sine,
};

/// Parameters for xnn_define_unary
union xnn_unary_params {
  struct {
    /// lower bound for clipping output values.
    float min;
    /// upper bound for clipping output values.
    float max;
  } clamp;
  struct {
    /// scale factor for negative input elements.
    float alpha;
  } elu;
  struct {
    /// scale factor for negative input elements.
    float negative_slope;
  } leaky_relu;
};

/// Define a unary operator Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param operator - type of unary operator to define.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param params - parameters to be interpreted by the specific operator type.
/// @param flags - binary features of the Node. No supported flags are currently defined.
enum xnn_status xnn_define_unary(
  xnn_subgraph_t subgraph,
  enum xnn_unary_operator type,
  const union xnn_unary_params* params,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Convert Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Convert Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_convert(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Convolution Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_padding_top - implicit zero-padding above 2D input data. Must be 0 if XNN_FLAG_TENSORFLOW_SAME_PADDING
///                            flag is specified.
/// @param input_padding_right - implicit zero-padding to the right of 2D input data. Must be 0 if
///                              XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_bottom - implicit zero-padding below 2D input data. Must be 0 if
///                               XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_left - implicit zero-padding to the left of 2D input data. Must be 0 if
///                             XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param kernel_height - kernel (filter) height.
/// @param kernel_width - kernel (filter) width.
/// @param subsampling_height - height of subsampling region for convolution output (convolution height stride).
/// @param subsampling_width - width of subsampling region for convolution output (convolution width stride).
/// @param dilation_height - dilation of kernel elements along the height dimension.
/// @param dilation_width - dilation of kernel elements along the width dimension.
/// @param groups - number of convolution groups.
/// @param group_input_channels - number of input channels per group.
/// @param group_output_channels - number of output channels per group.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, groups * group_input_channels] dimensions
/// @param filter_id - Value ID for the filter tensor. The filter tensor must ge a 4D tensor defined in the @a subgraph
///                    with [groups * group_output_channels, kernel_height, kernel_width, group_input_channels]
///                    dimensions.
/// @param bias_id - Value ID for the bias tensor, or XNN_INVALID_VALUE_ID for a 2D Convolution Node without a bias. If
///                  present, the bias tensor must be a 1D tensor defined in the @a subgraph with [groups *
///                  group_output_channels] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, groups * group_output_channels] dimensions.
/// @param flags - binary features of the 2D Convolution Node. The only currently supported values is
///                XNN_FLAG_TENSORFLOW_SAME_PADDING.
enum xnn_status xnn_define_convolution_2d(
  xnn_subgraph_t subgraph,
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t filter_id,
  uint32_t bias_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Deconvolution (Transposed Convolution) Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param padding_top - implicit padding above 2D output data.
/// @param padding_right - implicit padding to the right of 2D output data.
/// @param padding_bottom - implicit padding below 2D output data.
/// @param padding_left - implicit padding to the left of 2D output data.
/// @param adjustment_height - additional elements in the bottom of the 2D output data.
/// @param adjustment_width - additional elements to the right of the 2D output data.
/// @param kernel_height - kernel (filter) height.
/// @param kernel_width - kernel (filter) width.
/// @param upsampling_height - height of upsampling region for deconvolution input (deconvolution height stride).
/// @param upsampling_width - width of upsampling region for deconvolution input (deconvolution width stride).
/// @param dilation_height - dilation of kernel elements along the height dimension.
/// @param dilation_width - dilation of kernel elements along the width dimension.
/// @param groups - number of convolution groups.
/// @param group_input_channels - number of input channels per group.
/// @param group_output_channels - number of output channels per group.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, groups * group_input_channels] dimensions
/// @param filter_id - Value ID for the filter tensor. The filter tensor must ge a 4D tensor defined in the @a subgraph
///                    with [groups * group_output_channels, kernel_height, kernel_width, group_input_channels]
///                    dimensions.
/// @param bias_id - Value ID for the bias tensor, or XNN_INVALID_VALUE_ID for a 2D Convolution Node without a bias. If
///                  present, the bias tensor must be a 1D tensor defined in the @a subgraph with
///                  [groups * group_output_channels] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, groups * group_output_channels] dimensions.
/// @param flags - binary features of the 2D Deconvolution Node. No supported flags are currently defined.
enum xnn_status xnn_define_deconvolution_2d(
  xnn_subgraph_t subgraph,
  uint32_t padding_top,
  uint32_t padding_right,
  uint32_t padding_bottom,
  uint32_t padding_left,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t upsampling_height,
  uint32_t upsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t filter_id,
  uint32_t bias_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Depthwise Convolution Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_padding_top - implicit zero-padding above 2D input data. Must be 0 if XNN_FLAG_TENSORFLOW_SAME_PADDING
///                            flag is specified.
/// @param input_padding_right - implicit zero-padding to the right of 2D input data. Must be 0 if
///                              XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_bottom - implicit zero-padding below 2D input data. Must be 0 if
///                               XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_left - implicit zero-padding to the left of 2D input data. Must be 0 if
///                             XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param kernel_height - kernel (filter) height.
/// @param kernel_width - kernel (filter) width.
/// @param subsampling_height - height of subsampling region for convolution output (convolution height stride).
/// @param subsampling_width - width of subsampling region for convolution output (convolution width stride).
/// @param dilation_height - dilation of kernel elements along the height dimension.
/// @param dilation_width - dilation of kernel elements along the width dimension.
/// @param depth_multiplier - ratio of output channels to input channels.
/// @param input_channels - number of input channels.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, input_channels] dimensions
/// @param filter_id - Value ID for the filter tensor. The filter tensor must ge a 4D tensor defined in the @a subgraph
///                    with [1, kernel_height, kernel_width, input_channels * depth_multiplier] dimensions.
/// @param bias_id - Value ID for the bias tensor, or XNN_INVALID_VALUE_ID for a 2D Depthwise Convolution Node without
///                  a bias. If present, the bias tensor must be a 1D tensor defined in the @a subgraph with
///                  [input_channels * depth_multiplier] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, input_channels * depth_multiplier] dimensions.
/// @param flags - binary features of the 2D Depthwise Convolution Node. The only currently supported values is
///                XNN_FLAG_TENSORFLOW_SAME_PADDING.
enum xnn_status xnn_define_depthwise_convolution_2d(
  xnn_subgraph_t subgraph,
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t depth_multiplier,
  size_t input_channels,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t filter_id,
  uint32_t bias_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Depth To Space Node 2D and add it to a Subgraph.
///
/// The Depth To Space 2D Node rearranges data from depth into blocks of spatial data (a reverse transform to
/// Space To Depth). For a given input pixel, an output square of pixels with side @a block_size is formed from values
/// in the corresponding number of its channels. The output depth is therefore @a block_size x @a block_size times
/// smaller than that of the input.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param block_size - the size of the spatial block.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, OC * block_size * block_size] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, IH * block_size, IW * block_size, OC] dimensions.
/// @param flags - binary features of the input_channels Node. No supported flags are currently defined.
enum xnn_status xnn_define_depth_to_space_2d(
  xnn_subgraph_t subgraph,
  uint32_t block_size,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

enum xnn_status xnn_define_depth_to_space(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t block_size,
  uint32_t flags);

/// Define a 1D Global Average Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with 2 or more dimensions
///                   defined in the @a subgraph. Averaging is performed across the second-innermost dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor with 2 or more
///                    dimensions defined in the @a subgraph.
/// @param flags - binary features of the 1D Global Average Pooling Node. The only currently supported value is
///                XNN_FLAG_KEEP_DIMS.
XNN_DEPRECATED enum xnn_status xnn_define_global_average_pooling_1d(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Global Average Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with 3 or more dimensions
///                   defined in the @a subgraph. Averaging is performed across the second- and third-innermost
///                   dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor with 3 or more
///                    dimensions defined in the @a subgraph.
/// @param flags - binary features of the 2D Global Average Pooling Node. The only currently supported value is
///                XNN_FLAG_KEEP_DIMS.
XNN_DEPRECATED enum xnn_status xnn_define_global_average_pooling_2d(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 1D Global Sum Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with 2 or more dimensions
///                   defined in the @a subgraph. Averaging is performed across the second-innermost dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor with 2 or more
///                    dimensions defined in the @a subgraph.
/// @param flags - binary features of the 1D Global Sum Pooling Node. The only currently supported value is
///                XNN_FLAG_KEEP_DIMS.
XNN_DEPRECATED enum xnn_status xnn_define_global_sum_pooling_1d(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Global Sum Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with 3 or more dimensions
///                   defined in the @a subgraph. Averaging is performed across the second- and third-innermost
///                   dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor with 3 or more
///                    dimensions defined in the @a subgraph.
/// @param flags - binary features of the 2D Global Sum Pooling Node. The only currently supported value is
///                XNN_FLAG_KEEP_DIMS.
XNN_DEPRECATED enum xnn_status xnn_define_global_sum_pooling_2d(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Average Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_padding_top - implicit zero-padding above 2D input data. Must be 0 if XNN_FLAG_TENSORFLOW_SAME_PADDING
///                            flag is specified.
/// @param input_padding_right - implicit zero-padding to the right of 2D input data. Must be 0 if
///                              XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_bottom - implicit zero-padding below 2D input data. Must be 0 if
///                               XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_left - implicit zero-padding to the left of 2D input data. Must be 0 if
///                             XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param pooling_height - pooling (kernel) height.
/// @param pooling_width - pooling (kernel) width.
/// @param stride_height - displacing of the pooling window in the vertical dimension of the input pixels corresponding
///                        to vertically adjacent output pixels.
/// @param stride_width - displacing of the pooling window in the horizontal dimension of the input pixels corresponding
///                        to horizontally adjacent output pixels.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, channels] dimensions
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, channels] dimensions.
/// @param flags - binary features of the 2D Average Pooling Node. The only currently supported values is
///                XNN_FLAG_TENSORFLOW_SAME_PADDING.
enum xnn_status xnn_define_average_pooling_2d(
  xnn_subgraph_t subgraph,
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Fully Connected Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in the
///                   @a subgraph. If XNN_FLAG_TENSORFLOW_RESHAPE_2D is not specified, the input tensor must be at least
///                   1D and its last dimension must match the last dimension of the filter tensor. In particular, if
///                   input is a 2D tensor, it must have [batch_size, input_channels] dimensions.
///                   If XNN_FLAG_TENSORFLOW_RESHAPE_2D is specified, the number of elements in the input tensor must be
///                   divisible by the input_channels. The tensor will be first flattened into a 1D tensor of
///                   [num_input_elements] dimensions, then reshaped into a 2D tensor of
///                   [num_input_elements / input_channels, input_channels] dimensions where num_input_elements is the
///                   total number of elements in the input tensor.
/// @param filter_id - Value ID for the filter tensor. The filter tensor must a 2D tensor defined in the @a subgraph.
///                    If the XNN_FLAG_TRANSPOSE_WEIGHTS flag is not specified, the filter tensor must have
///                    [output_channels, input_channels] dimensions. If the XNN_FLAG_TRANSPOSE_WEIGHTS flag is
///                    specified, the filter tensor must have [input_channels, output_channels] dimensions.
/// @param bias_id - Value ID for the bias tensor, or XNN_INVALID_VALUE_ID for a Fully Connected Node without a bias.
///                  If present, the bias tensor must be a 1D tensor defined in the @a subgraph with [output_channels]
///                  dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph.
///                    If XNN_FLAG_TENSORFLOW_RESHAPE_2D is not specified, the output tensor must have the same
///                    dimensionality as the input tensor, all its dimensions but the last one must match the
///                    corresponding dimensions of the input tensor, and the last dimensions of the output tensor must
///                    match the first dimension of the filter tensor. In particular, if input is a 2D tensor, output
///                    must be a 2D tensor of [batch_size, output_channels] dimensions.
///                    If XNN_FLAG_TENSORFLOW_RESHAPE_2D is specified, output must be a 2D tensor of
///                    [num_input_elements / input_channels, output_channels] dimensions where num_input_elements is the
///                    total number of elements in the input tensor.
/// @param flags - binary features of the Fully Connected Node. The only currently supported values are
///                XNN_FLAG_TENSORFLOW_RESHAPE_2D and XNN_FLAG_TRANSPOSE_WEIGHTS.
enum xnn_status xnn_define_fully_connected(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t filter_id,
  uint32_t bias_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Sparse Fully Connected Node and add it to a Subgraph.
///
/// This operator is experimental, and will be removed in the future.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in the
///                   @a subgraph. If XNN_FLAG_TENSORFLOW_RESHAPE_2D is not specified, the input tensor must be at least
///                   1D and its last dimension must match the last dimension of the filter tensor. In particular, if
///                   input is a 2D tensor, it must have [batch_size, input_channels] dimensions.
///                   If XNN_FLAG_TENSORFLOW_RESHAPE_2D is specified, the number of elements in the input tensor must be
///                   divisible by the input_channels. The tensor will be first flattened into a 1D tensor of
///                   [num_input_elements] dimensions, then reshaped into a 2D tensor of
///                   [num_input_elements / input_channels, input_channels] dimensions where num_input_elements is the
///                   total number of elements in the input tensor.
/// @param filter_id - Value ID for the filter tensor. The filter tensor must a 2D tensor defined in the @a subgraph.
///                    If the XNN_FLAG_TRANSPOSE_WEIGHTS flag is not specified, the filter tensor must have
///                    [output_channels, input_channels] dimensions. If the XNN_FLAG_TRANSPOSE_WEIGHTS flag is
///                    specified, the filter tensor must have [input_channels, output_channels] dimensions.
/// @param bias_id - Value ID for the bias tensor, or XNN_INVALID_VALUE_ID for a Fully Connected Node without a bias.
///                  If present, the bias tensor must be a 1D tensor defined in the @a subgraph with [output_channels]
///                  dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph.
///                    If XNN_FLAG_TENSORFLOW_RESHAPE_2D is not specified, the output tensor must have the same
///                    dimensionality as the input tensor, all its dimensions but the last one must match the
///                    corresponding dimensions of the input tensor, and the last dimensions of the output tensor must
///                    match the first dimension of the filter tensor. In particular, if input is a 2D tensor, output
///                    must be a 2D tensor of [batch_size, output_channels] dimensions.
///                    If XNN_FLAG_TENSORFLOW_RESHAPE_2D is specified, output must be a 2D tensor of
///                    [num_input_elements / input_channels, output_channels] dimensions where num_input_elements is the
///                    total number of elements in the input tensor.
/// @param flags - binary features of the Fully Connected Node. The only currently supported values are
///                XNN_FLAG_TENSORFLOW_RESHAPE_2D and XNN_FLAG_TRANSPOSE_WEIGHTS.
enum xnn_status xnn_define_fully_connected_sparse(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t filter_id,
  uint32_t bias_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Max Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_padding_top - implicit zero-padding above 2D input data. Must be 0 if XNN_FLAG_TENSORFLOW_SAME_PADDING
///                            flag is specified.
/// @param input_padding_right - implicit zero-padding to the right of 2D input data. Must be 0 if
///                              XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_bottom - implicit zero-padding below 2D input data. Must be 0 if
///                               XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param input_padding_left - implicit zero-padding to the left of 2D input data. Must be 0 if
///                             XNN_FLAG_TENSORFLOW_SAME_PADDING flag is specified.
/// @param pooling_height - pooling (kernel) height.
/// @param pooling_width - pooling (kernel) width.
/// @param stride_height - displacing of the pooling window in the vertical dimension of the input pixels corresponding
///                        to vertically adjacent output pixels.
/// @param stride_width - displacing of the pooling window in the horizontal dimension of the input pixels corresponding
///                        to horizontally adjacent output pixels.
/// @param dilation_height - dilation of pooling elements along the height dimension.
/// @param dilation_width - dilation of pooling elements along the width dimension.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, channels] dimensions
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, channels] dimensions.
/// @param flags - binary features of the 2D Max Pooling Node. The only currently supported values is
///                XNN_FLAG_TENSORFLOW_SAME_PADDING.
enum xnn_status xnn_define_max_pooling_2d(
  xnn_subgraph_t subgraph,
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D ArgMax Pooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_padding_top - implicit zero-padding above 2D input data.
/// @param input_padding_right - implicit zero-padding to the right of 2D input data.
/// @param input_padding_bottom - implicit zero-padding below 2D input data.
/// @param input_padding_left - implicit zero-padding to the left of 2D input data.
/// @param pooling_height - pooling (kernel) height. Vertical stride between pooling regions match this value.
/// @param pooling_width - pooling (kernel) width. Horizontal stride between pooling regions match this value.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH, IW, channels] dimensions
/// @param output_value_id - Value ID for the output tensor with the maximum values in the pools. The output tensor must
///                          be a 4D tensor defined in the @a subgraph with [N, OH, OW, channels] dimensions.
/// @param output_index_id - Value ID for the output tensor with the indexes of the maximum values in the pools. The
///                          output tensor must be a 4D tensor defined in the @a subgraph with [N, OH, OW, channels]
///                          dimensions.
/// @param flags - binary features of the 2D ArgMax Pooling Node. No supported flags are currently defined.
enum xnn_status xnn_define_argmax_pooling_2d(
  xnn_subgraph_t subgraph,
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t input_id,
  uint32_t output_value_id,
  uint32_t output_index_id,
  uint32_t flags);

/// Define a 2D UnPooling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param padding_top - implicit padding above 2D output data.
/// @param padding_right - implicit padding to the right of 2D output data.
/// @param padding_bottom - implicit padding below 2D output data.
/// @param padding_left - implicit padding to the left of 2D output data.
/// @param pooling_height - height of the pooling window.
/// @param pooling_width - width of the pooling window.
/// @param input_value_id - Value ID for the input tensor with the max-pooling values to invert. The input value tensor
///                         must be a 4D tensor defined in the @a subgraph with [N, IH, IW, channels] dimensions.
/// @param input_index_id - Value ID for the input tensor with the indices of the per-pool maximum values produced by
///                         a 2D UnPooling Node. The input tensor must be a 4D tensor defined in the @a subgraph with
///                         [N, IH, IW, channels] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, OH, OW, channels] dimensions.
/// @param flags - binary features of the 2D UnPooling Node. No supported flags are currently defined.
enum xnn_status xnn_define_unpooling_2d(
  xnn_subgraph_t subgraph,
  uint32_t padding_top,
  uint32_t padding_right,
  uint32_t padding_bottom,
  uint32_t padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t input_value_id,
  uint32_t input_index_id,
  uint32_t output_id,
  uint32_t flags);

enum xnn_binary_operator {
  xnn_binary_invalid = -1,
  xnn_binary_add,
  xnn_binary_subtract,
  xnn_binary_multiply,
  xnn_binary_divide,
  xnn_binary_maximum,
  xnn_binary_minimum,
  xnn_binary_copysign,
  xnn_binary_squared_difference,
  xnn_binary_prelu,
  // The following operators are experimental and may be removed.
  xnn_binary_modulus,
  xnn_binary_atan2,
  xnn_binary_pow,
  xnn_binary_bitwise_and,
  xnn_binary_bitwise_or,
  xnn_binary_bitwise_xor,
  xnn_binary_shift_left,
  xnn_binary_shift_right_logical,
  xnn_binary_shift_right_arithmetic,
};

struct xnn_binary_params {
  /// lower bound for clipping output values.
  double output_min;
  /// upper bound for clipping output values.
  double output_max;
};

/// Define a 2-Input binary operator Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param type - Type of operator to apply to the two inputs.
/// @param params - Optional parameters for the operator.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Node. No supported flags are currently defined.
enum xnn_status xnn_define_binary(
  xnn_subgraph_t subgraph,
  enum xnn_binary_operator type,
  const struct xnn_binary_params* params,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2-Input Add Node and add it to a Subgraph.
///
/// The 2-Input Add Node computes elementwise addition of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Add Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_add2(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2-Input Multiply Node and add it to a Subgraph.
///
/// The 2-Input Multiply Node computes elementwise multiplication of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Multiply Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_multiply2(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

// Cap operations applied to logits (Q * K) of attention operator.
enum xnn_attention_logits_cap_type {
  // No capping.
  xnn_attention_logits_cap_type_none = 0,
  // Cap the absolute values of logits by tanh: tanh(logits / cap) * cap
  xnn_attention_logits_cap_type_tanh
};

// Params when the cap type is xnn_attention_logits_cap_type_tanh.
struct xnn_attention_logits_cap_tanh_params {
  float cap;
};

/// Define a Scaled Dot-Product Attention Node and add it to a Subgraph.
///
/// This operator is experimental.
///
/// The Scaled Dot-Product Attention Node computes a multi-head or multi-query scaled dot attention on the query, key,
/// and value tensors.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param cap_type - type of cap to be applied to the logits.
/// @param cap_params - parameters for the cap. Must be a pointer to xnn_attention_logits_cap_tanh_params if cap_type
///                     is xnn_attention_logits_cap_type_tanh.
/// @param query_id - Value ID for the query tensor. The query tensor must be a 3+-dimensional tensor defined in the
///                   @a subgraph with the dimensions as [*, H, T, C], where H/T/C are the heads/tokens/channels, and *
///                   is the 0 or more dimensions treated as batch size.
/// @param key_id - Value ID for the key tensor. The key tensor must be a 2+--dimensional tensor defined in the
///                 @a subgraph. It can have the same number of dimensions as the query, with the dimensions as
///                 [*, H, U, C] (multi-head), or have 1 less dimension than the query, with the dimensions as
///                 as [*, U, C] (multi-query, number of heads omitted implies single head), where H/U/C are the
///                 heads/key_value_tokens/channels, and * is the 0 or more dimensions treated as batch size. These
///                 batch size dimensions must be the same as query.
/// @param value_id - Value ID for the value tensor. The value tensor must be a 2+--dimensional tensor defined in the
///                   @a subgraph. It can have the same number of dimensions as the query, with the dimensions as
///                   [*, H, U, D] (multi-head), or have 1 less dimension than the query, with the dimensions as
///                   as [*, U, D] (multi-query, number of heads omitted implies single head), where H/U/D are the
///                   heads/key_value_tokens/value_channels, and * is the 0 or more dimensions treated as batch size.
///                   These batch size dimensions must be the same as query and key.
/// @param scale_id - Value ID for the scale tensor. The scale tensor must be a 1D tensor defined in the @a subgraph
///                   with [C] dimensions. The query tensor is multiplied with this scale tensor before the dot product
///                   with the key tensor.
/// @param mask_id - Value ID for the mask tensor. The mask tensor must be a 2D tensor defined in the @a subgraph with
///                  [T, U] dimensions. The mask tensor is added to the logits (query dot value).
/// @param output_id - Value ID for the output tensor. The output tensor must be a 3+-dimensional tensor defined in the
///                    @a subgraph with the dimensions as [*, H, T, D], where H/T/D are the heads/tokens/value_channels,
///                    and * is the 0 or more dimensions treated as batch size. These batch size dimensions must be the
///                    same as query, key, and value.
/// @param flags - binary features of the Scaled Dot Product Attention Node. No supported flags are currently defined.
enum xnn_status xnn_define_scaled_dot_product_attention(
  xnn_subgraph_t subgraph,
  enum xnn_attention_logits_cap_type cap_type,
  const void* cap_params,
  uint32_t query_id,
  uint32_t key_id,
  uint32_t value_id,
  uint32_t scale_id,
  uint32_t mask_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Subtract Node and add it to a Subgraph.
///
/// The Subtract Node computes elementwise subtraction of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Subtract Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_subtract(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Divide Node and add it to a Subgraph.
///
/// The Divide Node computes elementwise division of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Divide Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_divide(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2-Input Maximum Node and add it to a Subgraph.
///
/// The 2-Input Maximum Node computes elementwise maximum of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Maximum Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_maximum2(
  xnn_subgraph_t subgraph,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2-Input Minimum Node and add it to a Subgraph.
///
/// The 2-Input Minimum Node computes elementwise minimum of two tensor inputs with numpy broadcasting rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Minimum Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_minimum2(
  xnn_subgraph_t subgraph,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Squared Difference Node and add it to a Subgraph.
///
/// The Squared Difference Node computes elementwise squared difference of two tensor inputs with numpy broadcasting
/// rules.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the second
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an M-dimensional tensor defined in
///                    the @a subgraph with each dimension either equal to the corresponding dimension of the first
///                    input, or equal to 1. In the latter case, the elements of the input tensor are broadcasted along
///                    that dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be a max(N,M)-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the maximum between the corresponding dimension
///                    of the two inputs.
/// @param flags - binary features of the Squared Difference Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_squared_difference(
  xnn_subgraph_t subgraph,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Constant Pad Node with static padding specification and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param pre_paddings - number of padding elements to insert before input elements for every dimension. This array
///                       must have as many elements as the number of dimensions in the input tensor.
/// @param post_paddings - number of padding elements to insert after input elements for every dimension. This array
///                        must have as many elements as the number of dimensions in the input tensor.
/// @param padding_value - constant value used to initialize padding elements.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor with padding.
/// @param flags - binary features of the Constant Pad Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_constant_pad(
  xnn_subgraph_t subgraph,
  const size_t* pre_paddings,
  const size_t* post_paddings,
  float padding_value,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Expand Dims Node with and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_new_axes - number of new axes of size 1 to be inserted.
/// @param new_axes - The axis positions of the new axes in the expanded dimensions.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor with padding.
/// @param flags - binary features of the Constant Pad Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_expand_dims(
  xnn_subgraph_t subgraph,
  size_t num_new_axes,
  const size_t* new_axes,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Mean Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_reduction_axes - number of axes along which mean is computed.
/// @param reduction_axes - axes along which mean is computed.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with at least
///                   @a num_reduction_axes dimensions defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor defined in the
///                    @a subgraph with @a num_reduction_axes fewer dimensions than the input tensor (if
///                    XNN_FLAG_KEEP_DIMS is not specified), or has same dimension rank but the dimension at
///                    @a reduction_axes reduced to 1 (if XNN_FLAG_KEEP_DIMS is specified).
/// @param flags - binary features of the Mean Node. The only currently supported value is XNN_FLAG_KEEP_DIMS
XNN_DEPRECATED enum xnn_status xnn_define_static_mean(
  xnn_subgraph_t subgraph,
  size_t num_reduction_axes,
  const size_t* reduction_axes,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

enum xnn_reduce_operator {
  xnn_reduce_invalid = -1,
  xnn_reduce_sum,
  xnn_reduce_mean,
};

/// Define a Reduce Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_reduction_axes - number of axes along which reduce is computed.
/// @param reduction_axes - axes along which reduce is computed.
/// @param input_id - Value ID for the input tensor. The input tensor must be a dense tensor with at least
///                   @a num_reduction_axes dimensions defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be a dense tensor defined in the
///                    @a subgraph with @a num_reduction_axes fewer dimensions than the input tensor (if
///                    XNN_FLAG_KEEP_DIMS is not specified), or has same dimension rank but the dimension at
///                    @a reduction_axes reduced to 1 (if XNN_FLAG_KEEP_DIMS is specified).
/// @param flags - binary features of the Reduce Node. The only currently supported value is XNN_FLAG_KEEP_DIMS
enum xnn_status xnn_define_static_reduce(
  xnn_subgraph_t subgraph,
  enum xnn_reduce_operator reduce_operator_type,
  size_t num_reduction_axes,
  const size_t* reduction_axes,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Reduce Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_reduction_axes - number of axes along which reduce is computed.
/// @param reduction_axes - axes along which reduce is computed. Negative values
///                         are interpreted as offsets from @a
///                         num_reduction_axes.
/// @param input_id - Value ID for the input tensor. The input tensor must be a
///                   dense tensor with at least @a num_reduction_axes
///                   dimensions defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be
///                    a dense tensor defined in the @a subgraph with @a
///                    num_reduction_axes fewer dimensions than the input tensor
///                    (if XNN_FLAG_KEEP_DIMS is not specified), or has same
///                    dimension rank but the dimension at
///                    @a reduction_axes reduced to 1 (if XNN_FLAG_KEEP_DIMS is
///                    specified).
/// @param flags - binary features of the Reduce Node. The only currently
///                supported value is XNN_FLAG_KEEP_DIMS
enum xnn_status xnn_define_static_reduce_v2(        //
    xnn_subgraph_t subgraph,                        //
    enum xnn_reduce_operator reduce_operator_type,  //
    size_t num_reduction_axes,                      //
    const int64_t* reduction_axes,                  //
    uint32_t input_id,                              //
    uint32_t output_id,                             //
    uint32_t flags);

/// Define a 2-Input Concatenate Node and add it to a Subgraph.
///
/// The 2-Input Concatenate Node concatenates two tensors along a specified axis.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param axis - the axis to concatenate the two input tensors along. If this is less than zero, the number of
///               dimensions is added to it.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    second input.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    first input.
/// @param output_id - Value ID for the output tensor. The output tensor must be a N-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the dimension of both inputs, except the axis
///                    dimension, where it is the sum of the corresponding dimensions of both inputs.
/// @param flags - binary features of the Concatenate Node. No supported flags are currently defined.
enum xnn_status xnn_define_concatenate2(
  xnn_subgraph_t subgraph,
  int32_t axis,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 3-Input Concatenate Node and add it to a Subgraph.
///
/// The 3-Input Concatenate Node concatenates three tensors along a specified axis.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param axis - the axis to concatenate the two input tensors along. If this is less than zero, the number of
///               dimensions is added to it.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input3_id - Value ID for the third input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param output_id - Value ID for the output tensor. The output tensor must be a N-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the dimension of all inputs, except the axis
///                    dimension, where it is the sum of the corresponding dimensions of all inputs.
/// @param flags - binary features of the Concatenate Node. No supported flags are currently defined.
enum xnn_status xnn_define_concatenate3(
  xnn_subgraph_t subgraph,
  int32_t axis,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t input3_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 4-Input Concatenate Node and add it to a Subgraph.
///
/// The 4-Input Concatenate Node concatenates four tensors along a specified axis.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param axis - the axis to concatenate the two input tensors along. If this is less than zero, the number of
///               dimensions is added to it.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input3_id - Value ID for the third input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input4_id - Value ID for the fourth input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param output_id - Value ID for the output tensor. The output tensor must be a N-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the dimension of all inputs, except the axis
///                    dimension, where it is the sum of the corresponding dimensions of all inputs.
/// @param flags - binary features of the Concatenate Node. No supported flags are currently defined.
enum xnn_status xnn_define_concatenate4(
  xnn_subgraph_t subgraph,
  int32_t axis,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t input3_id,
  uint32_t input4_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 5-Input Concatenate Node and add it to a Subgraph.
///
/// The 5-Input Concatenate Node concatenates four tensors along a specified axis.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param axis - the axis to concatenate the two input tensors along. If this is less than zero, the number of
///               dimensions is added to it.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input3_id - Value ID for the third input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input4_id - Value ID for the fourth input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param input5_id - Value ID for the fourth input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph with each dimension, except the axis, equal to the corresponding dimension of the
///                    other inputs.
/// @param output_id - Value ID for the output tensor. The output tensor must be a N-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to the dimension of all inputs, except the axis
///                    dimension, where it is the sum of the corresponding dimensions of all inputs.
enum xnn_status xnn_define_concatenate5(
  xnn_subgraph_t subgraph,
  int32_t axis,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t input3_id,
  uint32_t input4_id,
  uint32_t input5_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Copy Sign Node and add it to a Subgraph.
///
/// The Copy Sign Node copies the sign of the second input to the first input.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be defined in the @a subgraph.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor.
/// @param flags - binary features of the Copy Sign Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_copysign(
  xnn_subgraph_t subgraph,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Copy Node and add it to a Subgraph.
///
/// The Copy Node copies an input tensor to an output tensor.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the first input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Copy Node. No supported flags are currently defined.
enum xnn_status xnn_define_copy(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2-Output Split Node and add it to a Subgraph.
///
/// The 2-Output Split Node splits an input tensor into two output tensors along a specified axis evenly.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param split_dim - the dimension to split the input tensor along. If this is less than zero, the number of
///                    dimensions is added to it.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in the @a
///                   subgraph.
/// @param output1_id - Value ID for the first output tensor. The output tensor must be an N-dimensional tensor defined
///                     in the @a subgraph with each dimension, except the axis, equal to the corresponding dimension
///                     of the second output. The split_dim dimension is half of the input's split_dim.
/// @param output2_id - Value ID for the second output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the first output. The split_dim dimension is half of the input's split_dim.
/// @param flags - binary features of the Split Node. No supported flags are currently defined.
enum xnn_status xnn_define_even_split2(
  xnn_subgraph_t subgraph,
  int32_t split_dim,
  uint32_t input_id,
  uint32_t output1_id,
  uint32_t output2_id,
  uint32_t flags);

/// Define a 3-Output Split Node and add it to a Subgraph.
///
/// The 3-Output Split Node splits an input tensor into three output tensors along a specified axis evenly.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param split_dim - the dimension to split the input tensor along. If this is less than zero, the number of
///                    dimensions is added to it.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in the @a
///                   subgraph.
/// @param output1_id - Value ID for the first output tensor. The output tensor must be an N-dimensional tensor defined
///                     in the @a subgraph with each dimension, except the axis, equal to the corresponding dimension
///                     of the second and third output. The split_dim dimension is one third of the input's split_dim.
/// @param output2_id - Value ID for the second output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the first and third output. The split_dim dimension is one third of the input's
///                     split_dim.
/// @param output3_id - Value ID for the third output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the second and third output. The split_dim dimension is one third of the input's
///                     split_dim.
/// @param flags - binary features of the Split Node. No supported flags are currently defined.
enum xnn_status xnn_define_even_split3(
  xnn_subgraph_t subgraph,
  int32_t split_dim,
  uint32_t input_id,
  uint32_t output1_id,
  uint32_t output2_id,
  uint32_t output3_id,
  uint32_t flags);

/// Define a 4-Output Split Node and add it to a Subgraph.
///
/// The 4-Output Split Node splits an input tensor into four output tensors along a specified axis evenly.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param split_dim - the dimension to split the input tensor along. If this is less than zero, the number of
///                    dimensions is added to it.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in the @a
///                   subgraph.
/// @param output1_id - Value ID for the first output tensor. The output tensor must be an N-dimensional tensor defined
///                     in the @a subgraph with each dimension, except the axis, equal to the corresponding dimension
///                     of the other output tensors. The split_dim dimension is one fourth of the input's split_dim.
/// @param output2_id - Value ID for the second output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the other output tensors. The split_dim dimension is one fourth of the input's
///                     split_dim.
/// @param output3_id - Value ID for the third output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the other output tensors. The split_dim dimension is one fourth of the input's
///                     split_dim.
/// @param output4_id - Value ID for the fourth output tensor. The output tensor must be an N-dimensional tensor
///                     defined in the @a subgraph with each dimension, except the axis, equal to the corresponding
///                     dimension of the other output tensors. The split_dim dimension is one fourth of the input's
///                     split_dim.
/// @param flags - binary features of the Split Node. No supported flags are currently defined.
enum xnn_status xnn_define_even_split4(
  xnn_subgraph_t subgraph,
  int32_t split_dim,
  uint32_t input_id,
  uint32_t output1_id,
  uint32_t output2_id,
  uint32_t output3_id,
  uint32_t output4_id,
  uint32_t flags);

/// Define a Reshape Node with static shape specification and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_dims - number of shape dimensions in the output tensor.
/// @param new_shape - shape dimensions of the output tensor.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor with padding.
/// @param flags - binary features of the Reshape Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_reshape(
  xnn_subgraph_t subgraph,
  size_t num_dims,
  const size_t* new_shape,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a 2D Resize Bilinear Node with static output height & width specification and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param new_height - height dimension of the output tensor.
/// @param new_width - width dimension of the output tensor.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, H, W, C] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, new_height, new_width, C] dimensions.
/// @param flags - binary features of the 2D Resize Bilinear Node. The only currently supported values are
///                XNN_FLAG_TENSORFLOW_LEGACY_MODE and XNN_FLAG_ALIGN_CORNERS, which are mutually exclusive.
enum xnn_status xnn_define_static_resize_bilinear_2d(
  xnn_subgraph_t subgraph,
  size_t new_height,
  size_t new_width,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a PReLU (Parametric ReLU) Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, H, W, channels] dimensions.
/// @param slope_id - Value ID for the slope tensor. The slope tensor must be a 1D tensor defined in the @a subgraph with
///                   either [1] or [channels] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, H, W, channels] dimensions.
/// @param flags - binary features of the PReLU Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_prelu(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t slope_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a RoPE (Rotary Positional Embeddings) Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param max_tokens - deprecated.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [batch, tokens, heads, channels] dimensions.
/// @param weights_id - Value ID for the weights tensor. The weights tensor must be a 2D tensor defined in the
///                     @a subgraph with [max_tokens, channels] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [batch, tokens, heads, channels] dimensions.
/// @param flags - binary features of the RoPE Node. No supported flags are currently defined.
enum xnn_status xnn_define_rope(
  xnn_subgraph_t subgraph,
  size_t max_sequence_size,
  uint32_t input_id,
  uint32_t weights_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Abs Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Abs Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_abs(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Bankers' Rounding Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Bankers' Rounding Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_bankers_rounding(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Batch Matrix Multiply Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input1_id - Value ID for the first input tensor. The input tensor must be an N-dimensional tensor defined in
///                    the @a subgraph. It must be at least 3D. The first N-2 dimensions must match the second input
///                    tensor. The last 2 dimensions are [M, K]. If XNN_FLAG_TRANSPOSE_B is not specified, the last
///                    dimension must match the second last dimension of the second input tensor. If
///                    XNN_FLAG_TRANSPOSE_B is specified, the last dimension must match the last dimension of the
///                    second input tensor.
/// @param input2_id - Value ID for the second input tensor. The input tensor must be an N-dimensional tensor defined
///                    in the @a subgraph. It must be at least 3D. The first N-2 dimensions must match the first input
///                    tensor. If XNN_FLAG_TRANSPOSE_B is not specified, the last 2 dimensions are [K, N], and the
///                    second last dimension must match the last dimension of the first input tensor. If
///                    XNN_FLAG_TRANSPOSE_B is specified, the last 2 dimensions are [N, K], and the last dimension must
///                    match the last dimension of the first input tensor.
/// @param output_id - Value ID for the output tensor. The output tensor must be an N-dimensional tensor defined in the
///                    @a subgraph. It must be at least 3D. The first N-2 dimensions must match the first and second
///                    input tensors . The last 2 dimensions must be [M, N].
/// @param flags - binary features of the Batch Matrix Multiply Node. The only currently supported value is
///                XNN_FLAG_TRANSPOSE_B.
enum xnn_status xnn_define_batch_matrix_multiply(
  xnn_subgraph_t subgraph,
  uint32_t input1_id,
  uint32_t input2_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Ceiling Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Ceiling Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_ceiling(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Clamp Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param output_min - lower bound for clipping output values.
/// @param output_max - upper bound for clipping output values.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Clamp Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_clamp(
  xnn_subgraph_t subgraph,
  float output_min,
  float output_max,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define an ELU (Exponential Linear Unit) Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param alpha - scale factor for negative output elements.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the ELU Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_elu(
  xnn_subgraph_t subgraph,
  float alpha,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Exp Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Exp Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_exp(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Floor Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Floor Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_floor(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define an GELU (Gaussian Error Linear Unit) Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the GELU Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_gelu(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a HardSwish Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the HardSwish Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_hardswish(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Leaky ReLU Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param negative_slope - scale factor for negative input elements.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Leaky ReLU Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_leaky_relu(
  xnn_subgraph_t subgraph,
  float negative_slope,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Log Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Log Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_log(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Negate Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Negate Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_negate(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Sigmoid Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Sigmoid Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_sigmoid(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a SoftMax Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph, and have at
///                   least one dimension.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the SoftMax Node. No supported flags are currently defined.
enum xnn_status xnn_define_softmax(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Space To Depth 2D Node and add it to a Subgraph.
///
/// The Space To Depth 2D Node rearranges blocks of spatial data into blocks (a reverse transform to Depth To Space 2D).
/// For a given input pixel, an output square of pixels with side @a block_size is formed from values in the
/// corresponding number of its channels. The output depth is therefore @a block_size x @a block_size times greater
/// than that of the input.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param block_size - the size of the spatial block.
/// @param input_id - Value ID for the input tensor. The input tensor must be a 4D tensor defined in the @a subgraph
///                   with [N, IH * block_size, IW * block_size, OC] dimensions.
/// @param output_id - Value ID for the output tensor. The output tensor must be a 4D tensor defined in the @a subgraph
///                    with [N, IH, IW, OC * block_size * block_size] dimensions.
/// @param flags - binary features of the input_channels Node. No supported flags are currently defined.
enum xnn_status xnn_define_space_to_depth_2d(
  xnn_subgraph_t subgraph,
  uint32_t block_size,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Square Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Square Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_square(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Square Root Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Square Root Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_square_root(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Reciprocal Square Root Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be
/// defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be
/// defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Square Root Node. No supported flags
/// are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_reciprocal_square_root(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

enum xnn_status xnn_define_static_slice(
  xnn_subgraph_t subgraph,
  size_t num_dims,
  const size_t* offsets,
  const size_t* sizes,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);
/// Define a Static Slice Node add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_dims - number of shape dimensions in the input and output tensor.
/// @param offsets - offsets in each dimension of the input tensor. This array must have @a num_dims elements. Can be
///                  negative meaning that the offset is relative to the end of the dimension.
/// @param sizes - size of each dimension in output tensor. This array must have @a num_dims elements.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    dimensions must match @a sizes.
/// @param flags - binary features of the Static Slice Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_slice_v2(  //
    xnn_subgraph_t subgraph,                 //
    size_t num_dims,                         //
    const int64_t* offsets,                  //
    const size_t* sizes,                     //
    uint32_t input_id,                       //
    uint32_t output_id,                      //
    uint32_t flags);

/// Define a Static Slice Node add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param num_dims - number of shape dimensions in the input and output tensor.
/// @param begins - offsets to the start in each dimension of the input tensor. This array must have @a num_dims elements.
///                 Can be negative meaning that the offset is relative to the end of the dimension.
/// @param ends - offsets to the end in each dimension of the input tensor. This array must have @a num_dims elements.
///               Can be negative meaning that the offset is relative to the end of the dimension.
///               An end value of 0 means "infer the largest open interval".
/// @param strides - The stride to use for each dimension of the slice. Can be NULL, in which case
///                  a value of 1 is assumed for all dimensions.
///                  TODO: at present, only stride values of 1 are supported (other values will return errors);
///                  this will be supported more fully in the future.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    dimensions must match @a sizes.
/// @param flags - binary features of the Static Slice Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_slice_v3(  //
    xnn_subgraph_t subgraph,                 //
    size_t num_dims,                         //
    const int64_t* begins,                   //
    const int64_t* ends,                     //
    const int64_t* strides,                  //
    uint32_t input_id,                       //
    uint32_t output_id,                      //
    uint32_t flags);

/// Define a Static Transpose Node and add it to a Subgraph.
///
/// The Static Transpose Node applies a generalized transpose to the input tensor using the permuation in perm.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be an N-dimensional tensor defined in
///                   the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be an N-dimensional tensor defined
///                    in the @a subgraph with each dimension equal to its corresponding permuted input dimension.
/// @param num_dims - the number of permutation dimensions. This must be equal to the number of input dimensions.
/// @param perm - The permutation of the axis of the input tensor. The perm array must must contain 0 to N-1 in the
///               permuted order.
/// @param flags - binary features of the Static Transpose Node. No supported flags are currently defined.
enum xnn_status xnn_define_static_transpose(
  xnn_subgraph_t subgraph,
  size_t num_dims,
  const size_t* perm,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Define a Tanh Node and add it to a Subgraph.
///
/// @param subgraph - a Subgraph object that will own the created Node.
/// @param input_id - Value ID for the input tensor. The input tensor must be defined in the @a subgraph.
/// @param output_id - Value ID for the output tensor. The output tensor must be defined in the @a subgraph, and its
///                    shape must match the shape of the input tensor.
/// @param flags - binary features of the Tanh Node. No supported flags are currently defined.
XNN_DEPRECATED enum xnn_status xnn_define_tanh(
  xnn_subgraph_t subgraph,
  uint32_t input_id,
  uint32_t output_id,
  uint32_t flags);

/// Code cache is a cache for JIT generated code.
typedef struct xnn_code_cache* xnn_code_cache_t;

/// Weights cache can be finalized in these ways:
enum xnn_weights_cache_finalization_kind {
  /// Weights cache is finalized, no insert operations into the weights cache is allowed, even if the "inserted"
  /// weights already exist in thee cache. Weights cache memory will also be trimmed to page boundary and set to
  /// read-only (to prevent writes).
  xnn_weights_cache_finalization_kind_hard,
  /// Weights cache will be finalized with some extra space at the end, this allows for "inserting" into the cache only
  /// if the weights are already in the cache, and errors on inserting uncached weights. There is memory overhead.
  xnn_weights_cache_finalization_kind_soft,
};

/// A combination of multiple factors to uniquely locate the weights cache.
struct xnn_weights_cache_look_up_key {
  /// The unique seed for each ukernel. It is guaranteed that each ukernel provides
  /// a consistent and identical seed.
  uint32_t seed;
  /// Pointer to the original kernel.
  const void* kernel;
  /// Pointer to the original bias, could be NULL.
  const void* bias;
};

/// A group of function pointers to manage weights cache. All functions may be
/// called on multi threads.
struct xnn_weights_cache_provider {
  /// User-specified pointer that will be passed as-is to all functions in this
  /// structure.
  void* context;

  /// Looks up the tuple of {cache_key, kernel, bias} in the cache. If it is found,
  /// returns the offset to the found entry for reuse. Otherwise, returns SIZE_MAX.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  /// @param cache_key - The key used to locate the weights cache entry.
  size_t (*look_up)(void* context, const struct xnn_weights_cache_look_up_key* cache_key);

  /// Ensures that cache has enough space for `n` bytes. Returns the address to
  /// store weight cache. Returns NULL if fails to reserve space.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  /// @param n - size to be reserved.
  void* (*reserve_space)(void* context, size_t n);

  /// Looks up packed weights at `ptr` in the cache. If it is found, reuse it.
  /// Otherwise, it is added to the cache. Returns the offset to the cache.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  /// @param cache_key - The key used to locate the weights cache entry.
  /// @param ptr - pointer pointing to the packed weight.
  /// @param size - size of the packed weight.
  size_t (*look_up_or_insert)(void* context, const struct xnn_weights_cache_look_up_key* cache_key, void* ptr, size_t size);

  /// Returns whether the cache is finalized.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  bool (*is_finalized)(void* context);

  /// Returns the absolute pointer corresponding to `offset`, where the offset is returned from
  /// `look_up` or `get_or_insert`. This function must be called after finalize.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  /// @param offset - offset to the start of internal buffer
  void* (*offset_to_addr)(void* context, size_t offset);

  /// Destroy a weights cache object, as well as memory used for the cache.
  /// @param context - The user-specified pointer from xnn_weights_cache_provider structure.
  enum xnn_status (*delete_cache)(void* context);
};

/// Weights cache is a cache for packed weights. It can be reused between runtimes.
typedef struct xnn_weights_cache_provider* xnn_weights_cache_t;

/// Create a weights cache object specifying the initial size of weights cache (in bytes).
///
/// @param[in] size - initial capacity of the weights cache (in bytes), i.e. it can hold size bytes without growing.
/// @param weights_cache_out - pointer to the variable that will be initialized to a handle to the weights cache provider
///                            upon successful return. Once created, the weights cache provider can be shared between
///                            different Runtime objects.
enum xnn_status xnn_create_weights_cache_with_size(size_t size, xnn_weights_cache_t* weights_cache_out);

enum xnn_status xnn_create_weights_cache(xnn_weights_cache_t* weights_cache_out);

/// Finalizes the weights cache. The kind of finalization is specified by `finalization_kind`.
/// @param weights_cache - the weights cache object to finalize.
/// @param finalization_kind - the kind of finalization.
enum xnn_status xnn_finalize_weights_cache(
  xnn_weights_cache_t weights_cache,
  enum xnn_weights_cache_finalization_kind finalization_kind);

// Wrapper function of the function pointers in `xnn_weights_cache_t`.
bool xnn_weights_cache_is_finalized(xnn_weights_cache_t cache);

/// Destroy a weights cache object, as well as memory used for the cache.
/// @param weights_cache - the weights cache object to destroy.
enum xnn_status xnn_delete_weights_cache(xnn_weights_cache_t weights_cache);

typedef struct xnn_workspace* xnn_workspace_t;

/// Create a workspace object.
/// @param workspace_out - pointer to the variable that will be initialized to a handle to the workspace object upon
///                        successful return. Once created, the workspace can be shared between different Runtime
///                        objects.
enum xnn_status xnn_create_workspace(xnn_workspace_t* workspace_out);
/// Destroy a workspace object, as well as memory used by the workspace. Object destruction can be deferred until all
/// Runtime objects created with this workspace are destroyed.
/// @param workspace - the workspace object to destroy.
enum xnn_status xnn_release_workspace(xnn_workspace_t workspace);

/// Runtime is a combination of an execution plan for subgraph Nodes and a memory manager for subgraph Values.
typedef struct xnn_runtime* xnn_runtime_t;

enum xnn_profile_info {
  /// Returns a size_t containing the number of operators.
  xnn_profile_info_num_operators,
  /// Returns a char[] containing the null character separated names of all operators.
  xnn_profile_info_operator_name,
  /// Returns a uint64_t[] with the runtimes of all operators in the same order as xnn_profile_info_operator_name.
  xnn_profile_info_operator_timing,
};

/// Return profile information for all operators.
///
/// @param runtime - a Runtime object created with @ref xnn_create_runtime, @ref xnn_create_runtime_v2 or
///                  @ref xnn_create_runtime_v3.
/// @param param_name - type of profile information required.
/// @param param_value_size - the size in bytes of memory pointed to by param_value. If this is not sufficient then
///                           param_value_size_ret will be set to the required size and xnn_status_out_of_memory will be
///                           returned.
/// @param param_value - a pointer to memory location where appropriate values for a given param_value will be written.
/// @param param_value_size_ret - returns number of bytes required to write the result if param_value_size is not
///                               sufficient.
enum xnn_status xnn_get_runtime_profiling_info(xnn_runtime_t runtime,
                                               enum xnn_profile_info param_name,
                                               size_t param_value_size,
                                               void* param_value,
                                               size_t* param_value_size_ret);

/// Create a Runtime object from a subgraph.
///
/// @param subgraph - a Subgraph object with all Values and Nodes that would be handled by the runtime. No Values or
///                   Nodes can be added to the runtime once it is constructed.
/// @param weights_cache - a cache for packed weights. The runtime will look up and reuse packed weights in this cache,
///                        this will reduce memory allocated for packed weights.
/// @param workspace - a workspace to hold internal tensors. The runtime will allocate space used for internal tensors
///                    and track them using workspace. Workspace can be shared and reused across different runtimes. If
///                    workspace is NULL, there will be no sharing: each runtime has its own workspace.
/// @param threadpool - the thread pool to be used for parallelisation of computations in the runtime. If the thread
///                     pool is NULL, the computation would run on the caller thread without parallelization.
/// @param flags - binary features of the runtime. The only currently supported values are
///                XNN_FLAG_HINT_SPARSE_INFERENCE, XNN_FLAG_HINT_FP16_INFERENCE, XNN_FLAG_FORCE_FP16_INFERENCE,
///                XNN_FLAG_YIELD_WORKERS, and XNN_FLAG_TRANSIENT_INDIRECTION_BUFFER. If XNN_FLAG_YIELD_WORKERS is
///                specified, worker threads would be yielded to the system scheduler after processing the last operator
///                in the Runtime. If XNN_FLAG_TRANSIENT_INDIRECTION_BUFFER is specified, convolution operators will
///                initialize indirection buffers on each inference run using temporary memory in the workspace, instead
///                of initializing persistent indirection buffers once.
/// @param runtime_out - pointer to the variable that will be initialized with a handle to the Runtime object upon
///                      successful return. Once constructed, the Runtime object is independent of the Subgraph object
///                      used to create it.
enum xnn_status xnn_create_runtime_v4(
  xnn_subgraph_t subgraph,
  xnn_weights_cache_t weights_cache,
  xnn_workspace_t workspace,
  pthreadpool_t threadpool,
  uint32_t flags,
  xnn_runtime_t* runtime_out);

enum xnn_status xnn_create_runtime_v3(
  xnn_subgraph_t subgraph,
  xnn_weights_cache_t weights_cache,
  pthreadpool_t threadpool,
  uint32_t flags,
  xnn_runtime_t* runtime_out);

enum xnn_status xnn_create_runtime_v2(
  xnn_subgraph_t subgraph,
  pthreadpool_t threadpool,
  uint32_t flags,
  xnn_runtime_t* runtime_out);

enum xnn_status xnn_create_runtime(
  xnn_subgraph_t subgraph,
  xnn_runtime_t* runtime_out);

struct xnn_external_value {
  uint32_t id;
  void* data;
};

/// Reshape an external value.
///
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. If the external ID is XNN_INVALID_VALUE_ID, an internal ID will be
///                      created for the Value.
/// @param num_dims - number of dimensions in the shape.
/// @param dims - pointer to an array of @a num_dims shape dimensions. If num_dims is 0, this pointer can be NULL.
///               XNNPACK does not keep any pointers to this array after the function returns.
enum xnn_status xnn_reshape_external_value(
  xnn_runtime_t runtime,
  uint32_t external_id,
  size_t num_dims,
  const size_t* dims);

/// Get the external value shape.
///
/// @param external_id - external ID for the Value. The ID must be within the range of reversed Value IDs specified on
///                      the Subgraph creation. The external ID can not be XNN_INVALID_VALUE_ID.
/// @param num_dims -  A valid pointer into which the number of dimensions in the shape will be written. It can not be larger than XNN_MAX_TENSOR_DIMS.
/// @param dims - pointer to an array of @a num_dims shape dimensions. This pointer can't be NULL. It must be large enough to hold
///               at least @a num_dims elements. XNNPACK does not keep any pointers to this array after the function returns.
enum xnn_status xnn_get_external_value_shape(
  xnn_runtime_t runtime,
  uint32_t external_id,
  size_t* num_dims,
  size_t* dims);

/// Reshape the XNNPACK runtime.
///
/// Propagates the shapes of input tensors through the graph to determine the shapes of intermediate and output tensors.
/// Memory is allocated if required. Output tensor shapes are returned by xnn_get_external_value_shape.
///
/// @param runtime - a Runtime object created with @ref xnn_create_runtime or @ref xnn_create_runtime_v2.
enum xnn_status xnn_reshape_runtime(
  xnn_runtime_t runtime);

/// Deprecated. Use xnn_reshape_runtime and xnn_setup_runtime_v2.
///
/// Setup data pointers for external inputs and outputs in a Runtime object and
/// allocate memory.
///
/// @param runtime - a Runtime object created with @ref xnn_create_runtime or @ref xnn_create_runtime_v2.
/// @param num_external_values - the number of external inputs and outputs specified in this call. This number must
///                              match the number of external inputs and outputs in the runtime, i.e. all external
///                              inputs and outputs in the runtime must be specified in one call.
/// @param external_values - array with location information for all external inputs and outputs in the runtime.
enum xnn_status xnn_setup_runtime(
  xnn_runtime_t runtime,
  size_t num_external_values,
  const struct xnn_external_value* external_values);

/// Setup data pointers for external inputs and outputs in a Runtime object.
/// Should be called after xnn_reshape_runtime.
///
/// @param runtime - a Runtime object created with @ref xnn_create_runtime or @ref xnn_create_runtime_v2.
/// @param num_external_values - the number of external inputs and outputs specified in this call. This number must
///                              match the number of external inputs and outputs in the runtime, i.e. all external
///                              inputs and outputs in the runtime must be specified in one call.
/// @param external_values - array with location information for all external inputs and outputs in the runtime.
enum xnn_status xnn_setup_runtime_v2(
  xnn_runtime_t runtime,
  size_t num_external_values,
  const struct xnn_external_value* external_values);

/// Execute forward pass for all operators in the runtime.
///
/// @param runtime - the Runtime object with the execution plan to invoke.
enum xnn_status xnn_invoke_runtime(
  xnn_runtime_t runtime);

/// Destroy a Runtime object, as well as operators and memory associated with it.
///
/// @param runtime - the Runtime object to destroy.
enum xnn_status xnn_delete_runtime(
  xnn_runtime_t runtime);

typedef struct xnn_operator* xnn_operator_t;

enum xnn_status xnn_run_operator(
  xnn_operator_t op,
  pthreadpool_t threadpool);

enum xnn_status xnn_delete_operator(
  xnn_operator_t op);

/// Operator API:
/// - create operator will create and populate a xnn_operator_t
/// - reshape operator will update fields in xnn_operator_t with shape/dimensions and parallelization information
/// - setup operator will update pointers to input and outputs
/// Each supported operator must have a create, reshape, and setup function. (Optionally a run function.)
/// Operators listed below are in alphabetical order by operator name; within each operator, we sort alphabetically by
/// data layout and type. We also group create, reshape, setup (and optionally run) functions of each operator together.

enum xnn_status xnn_create_binary_elementwise_nd(
  enum xnn_binary_operator type,
  enum xnn_datatype datatype,
  const struct xnn_quantization_params* input1_quantization,
  const struct xnn_quantization_params* input2_quantization,
  const struct xnn_quantization_params* output_quantization,
  uint32_t flags,
  xnn_operator_t* binary_op_out);

enum xnn_status xnn_reshape_binary_elementwise_nd(
  xnn_operator_t binary_op,
  size_t num_input1_dims,
  const size_t* input1_shape,
  size_t num_input2_dims,
  const size_t* input2_shape,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_binary_elementwise_nd(
  xnn_operator_t binary_op,
  const void* input1,
  const void* input2,
  void* output);

enum xnn_status xnn_run_binary_elementwise_nd(
  enum xnn_binary_operator type,
  enum xnn_datatype datatype,
  const struct xnn_quantization_params* input1_quantization,
  const struct xnn_quantization_params* input2_quantization,
  const struct xnn_quantization_params* output_quantization,
  uint32_t flags,
  size_t num_input1_dims,
  const size_t* input1_shape,
  size_t num_input2_dims,
  const size_t* input2_shape,
  const void* input1,
  const void* input2,
  void* output,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_unary_elementwise_nc(
  enum xnn_unary_operator op_type,
  enum xnn_datatype input_datatype,
  enum xnn_datatype output_datatype,
  const union xnn_unary_params* params,
  const struct xnn_quantization_params* input_quantization,
  const struct xnn_quantization_params* output_quantization,
  uint32_t flags,
  xnn_operator_t* op_out);

enum xnn_status xnn_reshape_unary_elementwise_nc(
  xnn_operator_t op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_unary_elementwise_nc(
  xnn_operator_t op,
  const void* input,
  void* output);

enum xnn_status xnn_run_unary_elementwise_nc(
  // create parameters
  enum xnn_unary_operator op_type,
  enum xnn_datatype input_datatype,
  enum xnn_datatype output_datatype,
  const union xnn_unary_params* params,
  const struct xnn_quantization_params* input_quantization,
  const struct xnn_quantization_params* output_quantization,
  uint32_t flags,
  // reshape parameters
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool,
  // setup parameters
  const void* input,
  void* output);

enum xnn_status xnn_create_argmax_pooling2d_nhwc_f32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t flags,
  xnn_operator_t* argmax_pooling_op_out);

enum xnn_status xnn_reshape_argmax_pooling2d_nhwc_f32(
  xnn_operator_t argmax_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_argmax_pooling2d_nhwc_f32(
  xnn_operator_t argmax_pooling_op,
  const float* input,
  float* output,
  uint32_t* index);

enum xnn_status xnn_create_average_pooling2d_nhwc_f16(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* average_pooling_op_out);

enum xnn_status xnn_reshape_average_pooling2d_nhwc_f16(
  xnn_operator_t average_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_average_pooling2d_nhwc_f16(
  xnn_operator_t average_pooling_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_average_pooling2d_nhwc_f32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* average_pooling_op_out);

enum xnn_status xnn_reshape_average_pooling2d_nhwc_f32(
  xnn_operator_t average_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_average_pooling2d_nhwc_f32(
  xnn_operator_t average_pooling_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_batch_matrix_multiply_nc_f16(
  uint32_t flags,
  xnn_operator_t* batch_matrix_multiply_op);

enum xnn_status xnn_create_batch_matrix_multiply_nc_f16_const_weights(
    size_t batch_size_b, size_t k, size_t n, const void* data_b, uint32_t flags,
    xnn_operator_t* batch_matrix_multiply_op);

enum xnn_status xnn_reshape_batch_matrix_multiply_nc_f16(
    xnn_operator_t batch_matrix_multiply_op, size_t num_batch_dims,
    const size_t* batch_dims_a, const size_t* batch_dims_b, size_t m, size_t k,
    size_t n, size_t* workspace_size, size_t* workspace_alignment,
    pthreadpool_t threadpool);

enum xnn_status xnn_setup_batch_matrix_multiply_nc_f16(
    xnn_operator_t batch_matrix_multiply_op, void* workspace,
    const void* input_a, const void* input_b, void* output);

enum xnn_status xnn_create_batch_matrix_multiply_nc_f32(
    uint32_t flags, xnn_operator_t* batch_matrix_multiply_op);

enum xnn_status xnn_create_batch_matrix_multiply_nc_f32_const_weights(
    size_t batch_size_b, size_t k, size_t n, const float* data_b,
    uint32_t flags, xnn_operator_t* batch_matrix_multiply_op);

enum xnn_status xnn_reshape_batch_matrix_multiply_nc_f32(
    xnn_operator_t batch_matrix_multiply_op, size_t num_batch_dims,
    const size_t* batch_dims_a, const size_t* batch_dims_b, size_t m, size_t k,
    size_t n, size_t* workspace_size, size_t* workspace_alignment,
    pthreadpool_t threadpool);

enum xnn_status xnn_setup_batch_matrix_multiply_nc_f32(
    xnn_operator_t batch_matrix_multiply_op, void* workspace,
    const float* input_a, const float* input_b, float* output);

enum xnn_status xnn_create_batch_matrix_multiply_nc_qd8_f32_qc8w(
    size_t batch_size_b, size_t k, size_t n, const int8_t* data_b,
    const float* scale_b, uint32_t flags,
    xnn_operator_t* batch_matrix_multiply_op);

enum xnn_status xnn_reshape_batch_matrix_multiply_nc_qd8_f32_qc8w(
    xnn_operator_t batch_matrix_multiply_op, size_t num_batch_dims,
    const size_t* batch_dims_a, const size_t* batch_dims_b, size_t m, size_t k,
    size_t n, pthreadpool_t threadpool);

enum xnn_status xnn_setup_batch_matrix_multiply_nc_qd8_f32_qc8w(
    xnn_operator_t batch_matrix_multiply_op, const int8_t* input_a,
    const struct xnn_quantization_params* quantization_params,
    float* output);

enum xnn_status xnn_create_constant_pad_nd_x8(
  const void* padding_value,
  uint32_t flags,
  xnn_operator_t* constant_pad_op_out);

enum xnn_status xnn_reshape_constant_pad_nd_x8(
  xnn_operator_t constant_pad_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_padding,
  const size_t* post_padding,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_constant_pad_nd_x8(
  xnn_operator_t constant_pad_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_constant_pad_nd_x8(
  uint32_t flags,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_paddings,
  const size_t* post_paddings,
  const void* input,
  void* output,
  const void* padding_value,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_constant_pad_nd_x16(
  const void* padding_value,
  uint32_t flags,
  xnn_operator_t* constant_pad_op_out);

enum xnn_status xnn_reshape_constant_pad_nd_x16(
  xnn_operator_t constant_pad_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_padding,
  const size_t* post_padding,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_constant_pad_nd_x16(
  xnn_operator_t constant_pad_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_constant_pad_nd_x16(
  uint32_t flags,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_paddings,
  const size_t* post_paddings,
  const void* input,
  void* output,
  const void* padding_value,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_constant_pad_nd_x32(
  const void* padding_value,
  uint32_t flags,
  xnn_operator_t* constant_pad_op_out);

enum xnn_status xnn_reshape_constant_pad_nd_x32(
  xnn_operator_t constant_pad_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_padding,
  const size_t* post_padding,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_constant_pad_nd_x32(
  xnn_operator_t constant_pad_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_constant_pad_nd_x32(
  uint32_t flags,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* pre_paddings,
  const size_t* post_paddings,
  const void* input,
  void* output,
  const void* padding_value,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_convert_nc_f16_qd8(
  uint32_t flags,
  xnn_operator_t* convert_op_out);

enum xnn_status xnn_reshape_convert_nc_f16_qd8(
  xnn_operator_t convert_op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

// quantization_params must be padded with at least XNN_EXTRA_QUANTIZATION_PARAMS entries.
enum xnn_status xnn_setup_convert_nc_f16_qd8(
  xnn_operator_t convert_op,
  const void* input,
  int8_t* output,
  struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_create_convert_nc_f32_qd8(
  uint32_t flags,
  xnn_operator_t* convert_op_out);

enum xnn_status xnn_reshape_convert_nc_f32_qd8(
  xnn_operator_t convert_op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

// quantization_params must be padded with at least XNN_EXTRA_QUANTIZATION_PARAMS entries.
enum xnn_status xnn_setup_convert_nc_f32_qd8(
  xnn_operator_t convert_op,
  const float* input,
  int8_t* output,
  struct xnn_quantization_params* quantization_params);

XNN_DEPRECATED enum xnn_status xnn_run_convert_nc_f32_f16(
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  size_t batch_size,
  const float* input,
  void* output,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_convolution2d_nchw_f16(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nchw_f16(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nchw_f16(
  xnn_operator_t convolution_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_convolution2d_nchw_f32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  const float* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nchw_f32(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nchw_f32(
  xnn_operator_t convolution_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_convolution2d_nhwc_f16(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nhwc_f16(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* workspace_size,
  size_t* workspace_alignment,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nhwc_f16(
  xnn_operator_t convolution_op,
  void* workspace,
  const void* input,
  void* output);

enum xnn_status xnn_create_convolution2d_nhwc_f32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  const float* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_create_convolution2d_nhwc_f32_f16(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

// Forward declare.
struct xnn_post_operation;

/// Deprecated
enum xnn_status xnn_create_fused_convolution2d_nhwc_f32(
    uint32_t input_padding_top,
    uint32_t input_padding_right,
    uint32_t input_padding_bottom,
    uint32_t input_padding_left,
    uint32_t kernel_height,
    uint32_t kernel_width,
    uint32_t subsampling_height,
    uint32_t subsampling_width,
    uint32_t dilation_height,
    uint32_t dilation_width,
    uint32_t groups,
    size_t group_input_channels,
    size_t group_output_channels,
    size_t input_channel_stride,
    size_t output_channel_stride,
    const float* kernel,
    const float* bias,
    size_t num_post_operations,
    struct xnn_post_operation* post_operations,
    uint32_t flags,
    xnn_code_cache_t code_cache,
    xnn_weights_cache_t weights_cache,
    xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nhwc_f32(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* workspace_size,
  size_t* workspace_alignment,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nhwc_f32(
  xnn_operator_t convolution_op,
  void* workspace,
  const float* input,
  float* output);

enum xnn_status xnn_create_convolution2d_nhwc_qd8_f16_qc8w(
    uint32_t input_padding_top, uint32_t input_padding_right,
    uint32_t input_padding_bottom, uint32_t input_padding_left,
    uint32_t kernel_height, uint32_t kernel_width, uint32_t subsampling_height,
    uint32_t subsampling_width, uint32_t dilation_height,
    uint32_t dilation_width, uint32_t groups, size_t group_input_channels,
    size_t group_output_channels, size_t input_channel_stride,
    size_t output_channel_stride, const float* kernel_scale,
    const int8_t* kernel, const float* bias, float output_min, float output_max,
    uint32_t flags, xnn_code_cache_t code_cache,
    xnn_weights_cache_t weights_cache, xnn_operator_t* convolution_op_out);

enum xnn_status xnn_create_convolution2d_nhwc_qd8_f32_qc8w(
    uint32_t input_padding_top, uint32_t input_padding_right,
    uint32_t input_padding_bottom, uint32_t input_padding_left,
    uint32_t kernel_height, uint32_t kernel_width, uint32_t subsampling_height,
    uint32_t subsampling_width, uint32_t dilation_height,
    uint32_t dilation_width, uint32_t groups, size_t group_input_channels,
    size_t group_output_channels, size_t input_channel_stride,
    size_t output_channel_stride, const float* kernel_scale,
    const int8_t* kernel, const float* bias, float output_min, float output_max,
    uint32_t flags, xnn_code_cache_t code_cache,
    xnn_weights_cache_t weights_cache, xnn_operator_t* convolution_op_out);

enum xnn_status xnn_create_convolution2d_nhwc_qs8(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  int8_t input_zero_point,
  float input_scale,
  float kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nhwc_qd8_f16_qc8w(
    xnn_operator_t convolution_op, size_t batch_size, size_t input_height,
    size_t input_width, size_t* workspace_size, size_t* workspace_alignment,
    size_t* output_height_out, size_t* output_width_out,
    pthreadpool_t threadpool);

enum xnn_status xnn_reshape_convolution2d_nhwc_qd8_f32_qc8w(
    xnn_operator_t convolution_op, size_t batch_size, size_t input_height,
    size_t input_width, size_t* workspace_size, size_t* workspace_alignment,
    size_t* output_height_out, size_t* output_width_out,
    pthreadpool_t threadpool);

enum xnn_status xnn_reshape_convolution2d_nhwc_qs8(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* workspace_size,
  size_t* workspace_alignment,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nhwc_qd8_f16_qc8w(
    xnn_operator_t convolution_op, void* workspace, const int8_t* input,
    void* output,
    const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_setup_convolution2d_nhwc_qd8_f32_qc8w(
    xnn_operator_t convolution_op, void* workspace, const int8_t* input,
    float* output,
    const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_setup_convolution2d_nhwc_qs8(
  xnn_operator_t convolution_op,
  void* workspace,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_convolution2d_nhwc_qs8_qc8w(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  int8_t input_zero_point,
  float input_scale,
  const float* kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nhwc_qs8_qc8w(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* workspace_size,
  size_t* workspace_alignment,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nhwc_qs8_qc8w(
  xnn_operator_t convolution_op,
  void* workspace,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_convolution2d_nhwc_qu8(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t subsampling_height,
  uint32_t subsampling_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_channel_stride,
  size_t output_channel_stride,
  uint8_t input_zero_point,
  float input_scale,
  uint8_t kernel_zero_point,
  float kernel_scale,
  const uint8_t* kernel,
  const int32_t* bias,
  uint8_t output_zero_point,
  float output_scale,
  uint8_t output_min,
  uint8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* convolution_op_out);

enum xnn_status xnn_reshape_convolution2d_nhwc_qu8(
  xnn_operator_t convolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* workspace_size,
  size_t* workspace_alignment,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_convolution2d_nhwc_qu8(
  xnn_operator_t convolution_op,
  void* workspace,
  const uint8_t* input,
  uint8_t* output);

enum xnn_status xnn_create_copy_nc_x8(
  uint32_t flags,
  xnn_operator_t* copy_op_out);

enum xnn_status xnn_reshape_copy_nc_x8(
  xnn_operator_t copy_op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_copy_nc_x8(
  xnn_operator_t copy_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_copy_nc_x16(
  uint32_t flags,
  xnn_operator_t* copy_op_out);

enum xnn_status xnn_reshape_copy_nc_x16(
  xnn_operator_t copy_op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_copy_nc_x16(
  xnn_operator_t copy_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_copy_nc_x32(
  uint32_t flags,
  xnn_operator_t* copy_op_out);

enum xnn_status xnn_reshape_copy_nc_x32(
  xnn_operator_t copy_op,
  size_t batch_size,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_copy_nc_x32(
  xnn_operator_t copy_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_copy_nc_x32(
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  size_t batch_size,
  const uint32_t* input,
  uint32_t* output,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_deconvolution2d_nhwc_f16(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_f16(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_f16(
  xnn_operator_t deconvolution_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_deconvolution2d_nhwc_f32(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  const float* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_create_deconvolution2d_nhwc_f32_f16(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_f32(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_f32(
  xnn_operator_t deconvolution_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_deconvolution2d_nhwc_qd8_f32_qc8w(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  const float* kernel_scale,
  const int8_t* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_qd8_f32_qc8w(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_qd8_f32_qc8w(
  xnn_operator_t deconvolution_op,
  const int8_t* input,
  float* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_create_deconvolution2d_nhwc_qs8(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  int8_t input_zero_point,
  float input_scale,
  float kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_qs8(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_qs8(
  xnn_operator_t deconvolution_op,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_deconvolution2d_nhwc_qs8_qc8w(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  int8_t input_zero_point,
  float input_scale,
  const float* kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_qs8_qc8w(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_qs8_qc8w(
  xnn_operator_t deconvolution_op,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_deconvolution2d_nhwc_qu8(
  uint32_t output_padding_top,
  uint32_t output_padding_right,
  uint32_t output_padding_bottom,
  uint32_t output_padding_left,
  uint32_t kernel_height,
  uint32_t kernel_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint32_t groups,
  size_t group_input_channels,
  size_t group_output_channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  uint8_t input_zero_point,
  float input_scale,
  uint8_t kernel_zero_point,
  float kernel_scale,
  const uint8_t* kernel,
  const int32_t* bias,
  uint8_t output_zero_point,
  float output_scale,
  uint8_t output_min,
  uint8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* deconvolution_op_out);

enum xnn_status xnn_reshape_deconvolution2d_nhwc_qu8(
  xnn_operator_t deconvolution_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  uint32_t adjustment_height,
  uint32_t adjustment_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_deconvolution2d_nhwc_qu8(
  xnn_operator_t deconvolution_op,
  const uint8_t* input,
  uint8_t* output);

enum xnn_status xnn_create_depth_to_space_nchw2nhwc_x16(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* depth_to_space_op_out);

enum xnn_status xnn_reshape_depth_to_space_nchw2nhwc_x16(
  xnn_operator_t depth_to_space_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_depth_to_space_nchw2nhwc_x16(
  xnn_operator_t depth_to_space_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_depth_to_space_nchw2nhwc_x32(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* depth_to_space_op_out);

enum xnn_status xnn_reshape_depth_to_space_nchw2nhwc_x32(
  xnn_operator_t depth_to_space_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_depth_to_space_nchw2nhwc_x32(
  xnn_operator_t depth_to_space_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_depth_to_space_nhwc_x8(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* depth_to_space_op_out);

enum xnn_status xnn_reshape_depth_to_space_nhwc_x8(
  xnn_operator_t depth_to_space_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_depth_to_space_nhwc_x8(
  xnn_operator_t depth_to_space_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_depth_to_space_nhwc_x16(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* depth_to_space_op_out);

enum xnn_status xnn_reshape_depth_to_space_nhwc_x16(
  xnn_operator_t depth_to_space_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_depth_to_space_nhwc_x16(
  xnn_operator_t depth_to_space_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_depth_to_space_nhwc_x32(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* depth_to_space_op_out);

enum xnn_status xnn_reshape_depth_to_space_nhwc_x32(
  xnn_operator_t depth_to_space_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_depth_to_space_nhwc_x32(
  xnn_operator_t depth_to_space_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_dynamic_fully_connected_nc_f16(
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* dynamic_fully_connected_op_out);

enum xnn_status xnn_reshape_dynamic_fully_connected_nc_f16(
  xnn_operator_t dynamic_fully_connected_op,
  size_t batch_size,
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  size_t* workspace_size,
  size_t* workspace_alignment,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_dynamic_fully_connected_nc_f16(
  xnn_operator_t dynamic_fully_connected_op,
  void* workspace,
  const void* input,
  const void* kernel,
  const void* bias,
  void* output);

enum xnn_status xnn_create_dynamic_fully_connected_nc_f32(
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* dynamic_fully_connected_op_out);

enum xnn_status xnn_reshape_dynamic_fully_connected_nc_f32(
  xnn_operator_t dynamic_fully_connected_op,
  size_t batch_size,
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  size_t* workspace_size,
  size_t* workspace_alignment,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_dynamic_fully_connected_nc_f32(
  xnn_operator_t dynamic_fully_connected_op,
  void* workspace,
  const float* input,
  const float* kernel,
  const float* bias,
  float* output);

enum xnn_status xnn_create_fully_connected_nc_f16(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_f16(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_f16(
  xnn_operator_t fully_connected_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_fully_connected_nc_f32_f16(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const void* kernel,
  const void* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_create_fully_connected_nc_bf16_f32(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const void* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_create_fully_connected_nc_f32(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const float* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_f32_f16(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_reshape_fully_connected_nc_bf16_f32(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_reshape_fully_connected_nc_f32(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_f32_f16(
  xnn_operator_t fully_connected_op,
  const float* input,
  float* output);

enum xnn_status xnn_setup_fully_connected_nc_bf16_f32(
  xnn_operator_t fully_connected_op,
  const void* input,
  float* output);

enum xnn_status xnn_setup_fully_connected_nc_f32(
  xnn_operator_t fully_connected_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_fully_connected_nc_f32_qc4w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  uint8_t kernel_zero_point,
  const float* kernel_scale,
  const uint8_t* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_f32_qc4w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_f32_qc4w(
  xnn_operator_t fully_connected_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_fully_connected_nc_f32_qc8w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const float* kernel_scale,
  const int8_t* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_f32_qc8w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_f32_qc8w(
  xnn_operator_t fully_connected_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_fully_connected_nc_qd8_f16_qc4w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  uint8_t kernel_zero_point,
  const float* kernel_scale,
  const void* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f16_qc4w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  void* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f16_qc4w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_fully_connected_nc_qd8_f16_qb4w(
    size_t input_channels,
    size_t output_channels,
    size_t input_stride,
    size_t output_stride,
    size_t block_size,
    uint8_t kernel_zero_point,
    const uint16_t* kernel_scale,
    const void* kernel,
    const float* bias,
    float output_min,
    float output_max,
    uint32_t flags,
    xnn_code_cache_t code_cache,
    xnn_weights_cache_t weights_cache,
    xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f16_qb4w(
    xnn_operator_t fully_connected_op,
    size_t batch_size,
    pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f16_qb4w(
    xnn_operator_t fully_connected_op,
    const int8_t* input,
    void* output,
    const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_create_fully_connected_nc_qd8_f32_qc4w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  uint8_t kernel_zero_point,
  const float* kernel_scale,
  const void* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f32_qc4w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  float* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f32_qc4w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_fully_connected_nc_qd8_f32_qb4w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  size_t block_size,
  uint8_t kernel_zero_point,
  const uint16_t* kernel_scale,
  const void* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f32_qb4w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f32_qb4w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  float* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_create_fully_connected_nc_qd8_f16_qc8w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const float* kernel_scale,
  const int8_t* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f16_qc8w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  void* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f16_qc8w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_fully_connected_nc_qd8_f32_qc8w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  const float* kernel_scale,
  const int8_t* kernel,
  const float* bias,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_setup_fully_connected_nc_qd8_f32_qc8w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  float* output,
  const struct xnn_quantization_params* quantization_params);

enum xnn_status xnn_reshape_fully_connected_nc_qd8_f32_qc8w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_fully_connected_nc_qs8(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  int8_t input_zero_point,
  float input_scale,
  float kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_qs8(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_qs8(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_fully_connected_nc_qs8_qc8w(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  int8_t input_zero_point,
  float input_scale,
  const float* kernel_scale,
  const int8_t* kernel,
  const int32_t* bias,
  int8_t output_zero_point,
  float output_scale,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_qs8_qc8w(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_qs8_qc8w(
  xnn_operator_t fully_connected_op,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_fully_connected_nc_qu8(
  size_t input_channels,
  size_t output_channels,
  size_t input_stride,
  size_t output_stride,
  uint8_t input_zero_point,
  float input_scale,
  uint8_t kernel_zero_point,
  float kernel_scale,
  const uint8_t* kernel,
  const int32_t* bias,
  uint8_t output_zero_point,
  float output_scale,
  uint8_t output_min,
  uint8_t output_max,
  uint32_t flags,
  xnn_code_cache_t code_cache,
  xnn_weights_cache_t weights_cache,
  xnn_operator_t* fully_connected_op_out);

enum xnn_status xnn_reshape_fully_connected_nc_qu8(
  xnn_operator_t fully_connected_op,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_fully_connected_nc_qu8(
  xnn_operator_t fully_connected_op,
  const uint8_t* input,
  uint8_t* output);


enum xnn_status xnn_create_max_pooling2d_nhwc_f16(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* max_pooling_op_out);

enum xnn_status xnn_reshape_max_pooling2d_nhwc_f16(
  xnn_operator_t max_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_max_pooling2d_nhwc_f16(
  xnn_operator_t max_pooling_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_max_pooling2d_nhwc_f32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  float output_min,
  float output_max,
  uint32_t flags,
  xnn_operator_t* max_pooling_op_out);

enum xnn_status xnn_reshape_max_pooling2d_nhwc_f32(
  xnn_operator_t max_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_max_pooling2d_nhwc_f32(
  xnn_operator_t max_pooling_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_max_pooling2d_nhwc_s8(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  int8_t output_min,
  int8_t output_max,
  uint32_t flags,
  xnn_operator_t* max_pooling_op_out);

enum xnn_status xnn_reshape_max_pooling2d_nhwc_s8(
  xnn_operator_t max_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_max_pooling2d_nhwc_s8(
  xnn_operator_t max_pooling_op,
  const int8_t* input,
  int8_t* output);

enum xnn_status xnn_create_max_pooling2d_nhwc_u8(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  uint32_t stride_height,
  uint32_t stride_width,
  uint32_t dilation_height,
  uint32_t dilation_width,
  uint8_t output_min,
  uint8_t output_max,
  uint32_t flags,
  xnn_operator_t* max_pooling_op_out);

enum xnn_status xnn_reshape_max_pooling2d_nhwc_u8(
  xnn_operator_t max_pooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_max_pooling2d_nhwc_u8(
  xnn_operator_t max_pooling_op,
  const uint8_t* input,
  uint8_t* output);

enum xnn_status xnn_create_reduce_nd(
  enum xnn_reduce_operator reduce_operator_type,
  enum xnn_datatype datatype,
  const struct xnn_quantization_params* input_quantization,
  const struct xnn_quantization_params* output_quantization,
  uint32_t flags,
  xnn_operator_t* reduce_op_out);

enum xnn_status xnn_reshape_reduce_nd(  //
    xnn_operator_t reduce_op,           //
    size_t num_reduction_axes,          //
    const int64_t* reduction_axes,      //
    size_t num_input_dims,              //
    const size_t* input_shape,          //
    size_t* workspace_size,             //
    size_t* workspace_alignment,        //
    pthreadpool_t threadpool);

enum xnn_status xnn_setup_reduce_nd(
    xnn_operator_t reduce_op,
    void* workspace,
    const void* input,
    void* output);

enum xnn_status xnn_create_resize_bilinear2d_nchw(
  enum xnn_datatype datatype,
  size_t output_height,
  size_t output_width,
  uint32_t flags,
  xnn_operator_t* resize_op_out);

enum xnn_status xnn_reshape_resize_bilinear2d_nchw(
  xnn_operator_t resize_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_resize_bilinear2d_nchw(
  xnn_operator_t resize_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_resize_bilinear2d_nhwc(
  enum xnn_datatype datatype,
  size_t output_height,
  size_t output_width,
  uint32_t flags,
  xnn_operator_t* resize_op_out);

enum xnn_status xnn_reshape_resize_bilinear2d_nhwc(
  xnn_operator_t resize_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  size_t* workspace_size,
  size_t* workspace_alignment,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_resize_bilinear2d_nhwc(
  xnn_operator_t resize_op,
  void* workspace,
  const void* input,
  void* output);

enum xnn_status xnn_create_rope_nthc_f16(
  uint32_t flags,
  xnn_operator_t* rope_op_out);

enum xnn_status xnn_reshape_rope_nthc_f16(
  xnn_operator_t rope_op,
  size_t batch_size,
  size_t tokens,
  size_t heads,
  size_t channels,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_rope_nthc_f16(
  xnn_operator_t rope_op,
  const void* input,
  const void* weights,
  void* output);

enum xnn_status xnn_create_rope_nthc_f32(
  uint32_t flags,
  xnn_operator_t* rope_op_out);

enum xnn_status xnn_reshape_rope_nthc_f32(
  xnn_operator_t rope_op,
  size_t batch_size,
  size_t tokens,
  size_t heads,
  size_t channels,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_rope_nthc_f32(
  xnn_operator_t rope_op,
  const float* input,
  const float* weights,
  float* output);

// N: batch size
// H: number of heads
// T: tokens (sequence length)
// C: channels (head dimension)
enum xnn_status xnn_create_scaled_dot_product_attention_nhtc_f16(
  enum xnn_attention_logits_cap_type cap_type,
  const void* cap_params,
  uint32_t flags,
  xnn_operator_t* attention_op_out);

enum xnn_status xnn_reshape_scaled_dot_product_attention_nhtc_f16(
  xnn_operator_t attention_op,
  size_t batch_size,
  size_t query_heads,
  // Number of tokens in query.
  size_t query_tokens,
  size_t key_value_heads,
  // Number of tokens in key/value. For self-attention, this is same as tokens.
  size_t key_value_tokens,
  size_t query_key_channels,
  size_t value_channels,
  size_t* workspace_size,
  size_t* workspace_alignment,
  pthreadpool_t threadpool);

// Query is of dimension [batch_size, query_heads, query_tokens, channels].
// Key and value are of dimension [batch_size, key_value_heads, key_value_tokens, channels].
// Scale is of dimension [channels].
// Mask is of dimension [query_tokens, key_value_tokens].
enum xnn_status xnn_setup_scaled_dot_product_attention_nhtc_f16(
  xnn_operator_t attention_op,
  void* workspace,
  const void* query,
  const void* key,
  const void* value,
  const void* scale,
  const void* mask,
  void* output);

// N: batch size
// H: number of heads
// T: tokens (sequence length)
// C: channels (head dimension)
enum xnn_status xnn_create_scaled_dot_product_attention_nhtc_f32(
  enum xnn_attention_logits_cap_type cap_type,
  const void* cap_params,
  uint32_t flags,
  xnn_operator_t* attention_op_out);

enum xnn_status xnn_reshape_scaled_dot_product_attention_nhtc_f32(
  xnn_operator_t attention_op,
  size_t batch_size,
  size_t query_heads,
  // Number of tokens in query.
  size_t query_tokens,
  size_t key_value_heads,
  // Number of tokens in key/value. For self-attention, this is same as tokens.
  size_t key_value_tokens,
  size_t query_key_channels,
  size_t value_channels,
  size_t* workspace_size,
  size_t* workspace_alignment,
  pthreadpool_t threadpool);

// Query is of dimension [batch_size, query_heads, query_tokens, query_key_channels].
// Key and value are of dimension [batch_size, key_value_heads, key_value_tokens, query_key_channels].
// Scale is of dimension [query_key_channels].
// Mask is of dimension [query_tokens, key_value_tokens].
// Output is of dimension [batch_size, query_heads, query_tokens, value_channels].
enum xnn_status xnn_setup_scaled_dot_product_attention_nhtc_f32(
  xnn_operator_t attention_op,
  void* workspace,
  const float* query,
  const float* key,
  const float* value,
  const float* scale,
  const float* mask,
  float* output);


enum xnn_status xnn_create_slice_nd_x16(
  uint32_t flags,
  xnn_operator_t* slice_op_out);

enum xnn_status xnn_reshape_slice_nd_x16(
  xnn_operator_t slice_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* offsets,
  const size_t* sizes,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_slice_nd_x16(
  xnn_operator_t slice_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_slice_nd_x32(
  uint32_t flags,
  xnn_operator_t* slice_op_out);

enum xnn_status xnn_reshape_slice_nd_x32(
  xnn_operator_t slice_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* offsets,
  const size_t* sizes,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_slice_nd_x32(
  xnn_operator_t slice_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_slice_nd_x32(
  size_t num_dims,
  const size_t* input_shape,
  const size_t* offsets,
  const size_t* sizes,
  const void* input,
  void* output,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_softmax_nc_f16(
  uint32_t flags,
  xnn_operator_t* softmax_op_out);

enum xnn_status xnn_reshape_softmax_nc_f16(
  xnn_operator_t softmax_op,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_softmax_nc_f16(
  xnn_operator_t softmax_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_softmax_nc_f32(
  uint32_t flags,
  xnn_operator_t* softmax_op_out);

enum xnn_status xnn_reshape_softmax_nc_f32(
  xnn_operator_t softmax_op,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_softmax_nc_f32(
  xnn_operator_t softmax_op,
  const float* input,
  float* output);

enum xnn_status xnn_create_softmax_nc_qu8(
  float input_scale,
  uint8_t output_zero_point,
  float output_scale,
  uint32_t flags,
  xnn_operator_t* softmax_op_out);

enum xnn_status xnn_reshape_softmax_nc_qu8(
  xnn_operator_t softmax_op,
  size_t channels,
  size_t input_stride,
  size_t output_stride,
  size_t batch_size,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_softmax_nc_qu8(
  xnn_operator_t softmax_op,
  const uint8_t* input,
  uint8_t* output);

enum xnn_status xnn_create_space_to_depth_nhwc_x16(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* space_to_depth_op_out);

enum xnn_status xnn_reshape_space_to_depth_nhwc_x16(
  xnn_operator_t space_to_depth_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_space_to_depth_nhwc_x16(
  xnn_operator_t space_to_depth_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_space_to_depth_nhwc_x32(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* space_to_depth_op_out);

enum xnn_status xnn_reshape_space_to_depth_nhwc_x32(
  xnn_operator_t space_to_depth_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_space_to_depth_nhwc_x32(
  xnn_operator_t space_to_depth_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_transpose_nd_x8(
  uint32_t flags,
  xnn_operator_t* transpose_op_out);

enum xnn_status xnn_reshape_transpose_nd_x8(
  xnn_operator_t transpose_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_transpose_nd_x8(
  xnn_operator_t transpose_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_transpose_nd_x8(
  const void* input,
  void* output,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_transpose_nd_x16(
  uint32_t flags,
  xnn_operator_t* transpose_op_out);

enum xnn_status xnn_reshape_transpose_nd_x16(
  xnn_operator_t transpose_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_transpose_nd_x16(
  xnn_operator_t transpose_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_transpose_nd_x16(
  const void* input,
  void* output,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_transpose_nd_x32(
  uint32_t flags,
  xnn_operator_t* transpose_op_out);

enum xnn_status xnn_reshape_transpose_nd_x32(
  xnn_operator_t transpose_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_transpose_nd_x32(
  xnn_operator_t transpose_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_transpose_nd_x32(
  const void* input,
  void* output,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_transpose_nd_x64(
  uint32_t flags,
  xnn_operator_t* transpose_op_out);

enum xnn_status xnn_reshape_transpose_nd_x64(
  xnn_operator_t transpose_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_transpose_nd_x64(
  xnn_operator_t transpose_op,
  const void* input,
  void* output);

enum xnn_status xnn_run_transpose_nd_x64(
  const void* input,
  void* output,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* output_perm,
  uint32_t flags,
  pthreadpool_t threadpool);

enum xnn_status xnn_create_unpooling2d_nhwc_x32(
  uint32_t input_padding_top,
  uint32_t input_padding_right,
  uint32_t input_padding_bottom,
  uint32_t input_padding_left,
  uint32_t pooling_height,
  uint32_t pooling_width,
  size_t channels,
  size_t input_pixel_stride,
  size_t output_pixel_stride,
  uint32_t flags,
  xnn_operator_t* unpooling_op_out);

enum xnn_status xnn_reshape_unpooling2d_nhwc_x32(
  xnn_operator_t unpooling_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t* output_height_out,
  size_t* output_width_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_unpooling2d_nhwc_x32(
  xnn_operator_t unpooling_op,
  const void* input,
  const uint32_t* index,
  void* output);

enum xnn_status xnn_create_slice_nd_x8(
  uint32_t flags,
  xnn_operator_t* slice_op_out);

enum xnn_status xnn_reshape_slice_nd_x8(
  xnn_operator_t slice_op,
  size_t num_dims,
  const size_t* input_shape,
  const size_t* offsets,
  const size_t* sizes,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_slice_nd_x8(
  xnn_operator_t slice_op,
  const void* input,
  void* output);

enum xnn_status xnn_create_space_to_depth_nhwc_x8(
  uint32_t block_size,
  uint32_t flags,
  xnn_operator_t* space_to_depth_op_out);

enum xnn_status xnn_reshape_space_to_depth_nhwc_x8(
  xnn_operator_t space_to_depth_op,
  size_t batch_size,
  size_t input_height,
  size_t input_width,
  size_t input_channels,
  size_t* output_height_out,
  size_t* output_width_out,
  size_t* output_channels_out,
  pthreadpool_t threadpool);

enum xnn_status xnn_setup_space_to_depth_nhwc_x8(
  xnn_operator_t space_to_depth_op,
  const void* input,
  void* output);

#ifdef __cplusplus
}  // extern "C"
#endif