1 files changed, 0 insertions, 12 deletions
diff --git a/src/pkg/math/copysign.go b/src/pkg/math/copysign.go
deleted file mode 100644
index 719c64b9e..000000000
--- a/src/pkg/math/copysign.go
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package math
-
-// Copysign returns a value with the magnitude
-// of x and the sign of y.
-func Copysign(x, y float64) float64 {
-	const sign = 1 << 63
-	return Float64frombits(Float64bits(x)&^sign | Float64bits(y)&sign)
-}