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-rw-r--r--libgo/go/math/atan.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/libgo/go/math/atan.go b/libgo/go/math/atan.go
index 986ba068661..d942bce0968 100644
--- a/libgo/go/math/atan.go
+++ b/libgo/go/math/atan.go
@@ -87,7 +87,7 @@ func satan(x float64) float64 {
return Pi/4 + xatan((x-1)/(x+1)) + 0.5*Morebits
}
-// Atan returns the arctangent of x.
+// Atan returns the arctangent, in radians, of x.
//
// Special cases are:
// Atan(±0) = ±0