// 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(x, y) returns a value with the magnitude | |
// of x and the sign of y. | |
func Copysign(x, y float64) float64 { | |
if x < 0 && y > 0 || x > 0 && y < 0 { | |
return -x | |
} | |
return x | |
} |