src/pkg/math/copysign.go - The Go Programming Language

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Source file src/pkg/math/copysign.go

     1	// Copyright 2010 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package math
     6	
     7	// Copysign(x, y) returns a value with the magnitude
     8	// of x and the sign of y.
     9	func Copysign(x, y float64) float64 {
    10		const sign = 1 << 63
    11		return Float64frombits(Float64bits(x)&^sign | Float64bits(y)&sign)
    12	}