math: fix typo and braino in my earlier commit
The bug number was a typo, and I forgot to switch the implementation
back to if statements after the change from Float64bits in the first
patchset back to branching.
if statements can currently be inlined, but switch cannot (#13071)
Change-Id: I81d0cf64bda69186c3d747a07047f6a694f8fa70
Reviewed-on: https://go-review.googlesource.com/16446
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/src/math/abs.go b/src/math/abs.go
index e35e4da..924ee7c 100644
--- a/src/math/abs.go
+++ b/src/math/abs.go
@@ -10,13 +10,13 @@
// Abs(±Inf) = +Inf
// Abs(NaN) = NaN
func Abs(x float64) float64 {
- // TODO: once golang.org/issue/13905 is fixed, change this to:
+ // TODO: once golang.org/issue/13095 is fixed, change this to:
// return Float64frombits(Float64bits(x) &^ (1 << 63))
// But for now, this generates better code and can also be inlined:
- switch {
- case x < 0:
+ if x < 0 {
return -x
- case x == 0:
+ }
+ if x == 0 {
return 0 // return correctly abs(-0)
}
return x
