math: modify a comment to the convention format.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/8012043

diff --git a/src/pkg/math/tanh.go b/src/pkg/math/tanh.go
index 7305be66c7fe0cba2c3dde7aadd31d8dd8b202c5..cf0ffa1923f9d805dd8c6e8ad3caafe4ef845a6a 100644 (file)
--- a/src/pkg/math/tanh.go
+++ b/src/pkg/math/tanh.go
@@ -65,7 +65,7 @@ var tanhQ = [...]float64{
        4.84406305325125486048E3,
 }
 
-// Tanh computes the hyperbolic tangent of x.
+// Tanh returns the hyperbolic tangent of x.
 //
 // Special cases are:
 //     Tanh(±0) = ±0