From c035eb49053996354c504362feb20d64e27b28e2 Mon Sep 17 00:00:00 2001
From: "Jeong, YunWon" <69878+youknowone@users.noreply.github.com>
Date: Wed, 23 Apr 2025 21:04:42 +0900
Subject: [PATCH] Add warning for mul_add feature

---
 Cargo.toml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 5b6b7e0..0cea366 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,11 @@ license = "PSF-2.0"
 
 
 [features]
-# Turning on this feature on aarch64-apple-darwin helps bit representation compatibility
+# Do not enable this feature unless you really need it.
+# CPython didn't intend to use FMA for its math library.
+# This project uses this feature in CI to verify the code doesn't have additional bugs on aarch64-apple-darwin.
+# However, this does not mean that using this feature is better or more correct on that platform.
+# Note that the quality of the results has been well-tested without FMA but has not been tested with FMA.
 # See also: https://github.com/python/cpython/issues/132763
 mul_add = []