Fix mul_sub to use simd_fneg intrinsic

GrigoryEvko · GrigoryEvko · commit 1acc2a576ab7 · 2025-11-17T00:38:40.000+03:00
diff --git a/crates/std_float/src/lib.rs b/crates/std_float/src/lib.rs
@@ -66,7 +66,7 @@ pub trait StdFloat: Sealed + Sized {
     #[inline]
     #[must_use = "method returns a new vector and does not mutate the original value"]
     fn mul_sub(self, a: Self, b: Self) -> Self {
-        unsafe { intrinsics::simd_fma(self, a, -b) }
+        unsafe { intrinsics::simd_fma(self, a, intrinsics::simd_fneg(b)) }
     }
 
     /// Produces a vector where every element has the square root value

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ pub trait StdFloat: Sealed + Sized {`
`66`	`66`	`#[inline]`
`67`	`67`	`#[must_use = "method returns a new vector and does not mutate the original value"]`
`68`	`68`	`fn mul_sub(self, a: Self, b: Self) -> Self {`
`69`		`- unsafe { intrinsics::simd_fma(self, a, -b) }`
	`69`	`+ unsafe { intrinsics::simd_fma(self, a, intrinsics::simd_fneg(b)) }`
`70`	`70`	`}`
`71`	`71`
`72`	`72`	`/// Produces a vector where every element has the square root value`