Partially stabilize `int_roundings` #94455

jhpratt · 2022-02-28T20:10:04Z

This stabilizes the following:

impl uX {
    pub const fn div_ceil(self, rhs: Self) -> Self;
    pub const fn next_multiple_of(self, rhs: Self) -> Self;
    pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>;
}

This feature is tracked in #88581.

jhpratt · 2022-05-11T21:21:30Z

With this re-entering FCP, I've updated the PR to reflect the rustc version it will be stabilized in. As there's a release next week, it'll land in 1.63 rather than the currently nightly (1.62).

bors · 2022-06-29T08:53:34Z

☔ The latest upstream changes (presumably #98656) made this pull request unmergeable. Please resolve the merge conflicts.

Dylan-DPC · 2022-07-24T10:54:43Z

@jhpratt if you can resolve these conflicts we can push this forward

jhpratt · 2022-07-24T18:18:39Z

The reason I hadn't resolved the conflicts is because FCP hasn't even started. There is still a blocker in the tracking issue.

est31 · 2022-08-27T20:17:01Z

👋 Hello, I'm writing this comment in this stabilization PR to notify you, the authors of this PR, that #100591 has been merged, which implemented a change in how features are stabilized.

Your PR has been filed before the change, so will likely require modifications in order to comply with the new rules. I recommend you to:

rebase the PR onto latest master, so that uses of the placeholder are possible.
replace the version numbers in the PR with the placeholder CURRENT_RUSTC_VERSION. For language changes, this means the version numbers in accepted.rs (example: 4caedba). For library changes, this means the since fields (example e576a9b).

That's it! The CURRENT_RUSTC_VERSION placeholder will, as part of the release process, be replaced with the version number that the PR merged for. It can be used anywhere in rust-lang/rust, not just accepted.rs and the since fields.

If you have any questions, feel free to drop by the zulip stream, or ping me directly in this PR's thread. Thanks! 👋

jhpratt · 2022-08-27T21:16:29Z

Thanks @est31! I knew it was discussed on Zulip but didn't realize you had actually implemented it. I've just updated this PR to use it.

@rustbot label -S-waiting-on-author

bors · 2022-11-17T05:34:33Z

☔ The latest upstream changes (presumably #103138) made this pull request unmergeable. Please resolve the merge conflicts.

jhpratt · 2023-07-31T14:51:23Z

It's in FCP. Once that's done, I'll update the PR.

joshtriplett · 2023-08-12T04:39:09Z

@bors r+ rollup

@jhpratt Thank you for your persistence in getting these stabilized!

bors · 2023-08-12T04:39:12Z

📌 Commit 62ca5aa has been approved by joshtriplett

It is now in the queue for this repository.

jhpratt · 2023-08-12T04:42:01Z

It only took a year and a half and three FCPs!

…joshtriplett Partially stabilize `int_roundings` This stabilizes the following: ```rust impl uX { pub const fn div_ceil(self, rhs: Self) -> Self; pub const fn next_multiple_of(self, rhs: Self) -> Self; pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>; } ``` This feature is tracked in rust-lang#88581.

…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#94455 (Partially stabilize `int_roundings`) - rust-lang#114132 (Better Debug for Vars and VarsOs) - rust-lang#114584 (E0277 nolonger points at phantom `.await`) - rust-lang#114667 (Record binder for bare trait object in LifetimeCollectVisitor) - rust-lang#114692 (downgrade `internal_features` to warn) - rust-lang#114703 (Cover ParamConst in smir) - rust-lang#114734 (Mark oli as "on vacation") r? `@ghost` `@rustbot` modify labels: rollup

As of nightly-2023-08-13, num-bigint 0.4.0 no longer compiles because of rust-lang/rust#94455. error[E0308]: mismatched types --> num-bigint-0.4.0/src/biguint/convert.rs:70:19 | 70 | .div_ceil(&big_digit::BITS.into()) | -------- ^^^^^^^^^^^^^^^^^^^^^^^ expected `u64`, found `&_` | | | arguments to this method are incorrect | = note: expected type `u64` found reference `&_` note: method defined here --> .rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/mod.rs:1167:5 | 1167 | / uint_impl! { 1168 | | Self = u64, 1169 | | ActualT = u64, 1170 | | SignedT = i64, ... | 1184 | | bound_condition = "", 1185 | | } | |_____^ = note: this error originates in the macro `uint_impl` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider removing the borrow | 70 - .div_ceil(&big_digit::BITS.into()) 70 + .div_ceil(big_digit::BITS.into()) | error[E0308]: mismatched types --> num-bigint-0.4.0/src/biguint/convert.rs:585:19 | 585 | .div_ceil(&u64::from(bits)) | -------- ^^^^^^^^^^^^^^^^ expected `u64`, found `&u64` | | | arguments to this method are incorrect | note: method defined here --> .rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/mod.rs:1167:5 | 1167 | / uint_impl! { 1168 | | Self = u64, 1169 | | ActualT = u64, 1170 | | SignedT = i64, ... | 1184 | | bound_condition = "", 1185 | | } | |_____^ = note: this error originates in the macro `uint_impl` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider removing the borrow | 585 - .div_ceil(&u64::from(bits)) 585 + .div_ceil(u64::from(bits)) | error[E0308]: mismatched types --> num-bigint-0.4.0/src/biguint/convert.rs:613:19 | 613 | .div_ceil(&u64::from(bits)) | -------- ^^^^^^^^^^^^^^^^ expected `u64`, found `&u64` | | | arguments to this method are incorrect | note: method defined here --> .rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/mod.rs:1167:5 | 1167 | / uint_impl! { 1168 | | Self = u64, 1169 | | ActualT = u64, 1170 | | SignedT = i64, ... | 1184 | | bound_condition = "", 1185 | | } | |_____^ = note: this error originates in the macro `uint_impl` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider removing the borrow | 613 - .div_ceil(&u64::from(bits)) 613 + .div_ceil(u64::from(bits)) | error[E0308]: mismatched types --> num-bigint-0.4.0/src/biguint.rs:398:54 | 398 | let root_scale = extra_bits.div_ceil(&n64); | -------- ^^^^ expected `u64`, found `&u64` | | | arguments to this method are incorrect | note: method defined here --> .rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/mod.rs:1167:5 | 1167 | / uint_impl! { 1168 | | Self = u64, 1169 | | ActualT = u64, 1170 | | SignedT = i64, ... | 1184 | | bound_condition = "", 1185 | | } | |_____^ = note: this error originates in the macro `uint_impl` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider removing the borrow | 398 - let root_scale = extra_bits.div_ceil(&n64); 398 + let root_scale = extra_bits.div_ceil(n64); |

Currently next_multiple_of() is behinged a Feature gate: int_rounding. See rust-lang/rust#88581 But it seems that this function is stablized in rust 1.73. See rust-lang/rust#94455 Currently Embassy is still using nightly for many other unstable features. So I do see an issue to use this function.

Rua · 2024-04-28T10:29:04Z

What happened to this? It's not stable yet but was supposed to be in 1.73?

est31 · 2024-04-28T12:14:04Z

@Rua it's stable for unsigned integers only. You probably tried to use these functions with signed integers.

rust-highfive assigned joshtriplett Feb 28, 2022

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. labels Feb 28, 2022

jhpratt mentioned this pull request Feb 28, 2022

Tracking Issue for int_roundings #88581

Open

joshtriplett added I-libs-api-nominated Nominated for discussion during a libs-api team meeting. and removed I-libs-api-nominated Nominated for discussion during a libs-api team meeting. labels Mar 2, 2022

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jhpratt force-pushed the stabilize-int_roundings branch from 08c164f to 37bb74d Compare May 11, 2022 21:20

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JohnTitor added S-waiting-on-fcp Status: PR is in FCP and is awaiting for FCP to complete. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 20, 2022

bors added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jun 29, 2022

jhpratt force-pushed the stabilize-int_roundings branch from 37bb74d to 204623a Compare August 27, 2022 21:15

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Partially stabilize #![feature(int_roundings)]

7f08376

jhpratt force-pushed the stabilize-int_roundings branch from 204623a to 7f08376 Compare August 12, 2023 04:12

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Remove unnecessary feature gates

62ca5aa

jhpratt force-pushed the stabilize-int_roundings branch from 6ca8826 to 62ca5aa Compare August 12, 2023 04:21

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 12, 2023

jhpratt changed the title ~~Stabilize int_roundings~~ Partially stabilize int_roundings Aug 12, 2023

matthiaskrgr mentioned this pull request Aug 12, 2023

Rollup of 6 pull requests #114751

Closed

matthiaskrgr mentioned this pull request Aug 12, 2023

Rollup of 7 pull requests #114756

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bors merged commit 9aea966 into rust-lang:master Aug 12, 2023

rustbot added this to the 1.73.0 milestone Aug 12, 2023

joshtriplett added the relnotes Marks issues that should be documented in the release notes of the next release. label Aug 15, 2023

jhpratt deleted the stabilize-int_roundings branch September 21, 2023 00:57

samsieber mentioned this pull request Jan 24, 2024

Integer division method or operator that rounds up rust-lang/rfcs#2844

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zekun000 mentioned this pull request Mar 29, 2024

deposit in prologue and refund in epilogue to prevent undergasing attack for randomness txns aptos-labs/aptos-core#12695

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