math: remove repeated comment.
R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/7835046
diff --git a/src/pkg/math/sqrt.go b/src/pkg/math/sqrt.go
index 21336df..1bd4437 100644
--- a/src/pkg/math/sqrt.go
+++ b/src/pkg/math/sqrt.go
@@ -4,15 +4,6 @@
package math
-// Sqrt returns the square root of x.
-//
-// Special cases are:
-// Sqrt(+Inf) = +Inf
-// Sqrt(±0) = ±0
-// Sqrt(x < 0) = NaN
-// Sqrt(NaN) = NaN
-func Sqrt(x float64) float64
-
// The original C code and the long comment below are
// from FreeBSD's /usr/src/lib/msun/src/e_sqrt.c and
// came with this notice. The go code is a simplified
@@ -98,6 +89,8 @@
// Sqrt(±0) = ±0
// Sqrt(x < 0) = NaN
// Sqrt(NaN) = NaN
+func Sqrt(x float64) float64
+
func sqrt(x float64) float64 {
// special cases
switch {
