update comments

Lokathor · web-flow · commit 9ec48059dc79 · 2019-08-08T18:21:18.000-06:00
diff --git a/libm/src/math/sqrt.rs b/libm/src/math/sqrt.rs
@@ -94,9 +94,9 @@ pub fn sqrt(x: f64) -> f64 {
     }
     #[cfg(target_feature = "sse2")]
     {
-        // Note(Lokathor): If compile time settings allow, we just use SSE2, since
-        // the sqrt in `std` on these platforms also compiles down to an SSE2
-        // instruction.
+        // Note: This path is unlikely since LLVM will usually have already
+        // optimized sqrt calls into hardware instructions if sse2 is available,
+        // but if someone does end up here they'll apprected the speed increase.
         #[cfg(target_arch = "x86")]
         use core::arch::x86::*;
         #[cfg(target_arch = "x86_64")]

Original file line number	Diff line number	Diff line change
`@@ -94,9 +94,9 @@ pub fn sqrt(x: f64) -> f64 {`
`94`	`94`	`}`
`95`	`95`	`#[cfg(target_feature = "sse2")]`
`96`	`96`	`{`
`97`		`- // Note(Lokathor): If compile time settings allow, we just use SSE2, since`
`98`		- // the sqrt in `std` on these platforms also compiles down to an SSE2
`99`		`- // instruction.`
	`97`	`+ // Note: This path is unlikely since LLVM will usually have already`
	`98`	`+ // optimized sqrt calls into hardware instructions if sse2 is available,`
	`99`	`+ // but if someone does end up here they'll apprected the speed increase.`
`100`	`100`	`#[cfg(target_arch = "x86")]`
`101`	`101`	`use core::arch::x86::*;`
`102`	`102`	`#[cfg(target_arch = "x86_64")]`