1 // Copyright 2009 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 // Abs returns the absolute value of x. 8 // 9 // Special cases are: 10 // Abs(Inf) = +Inf 11 // Abs(NaN) = NaN 12 func Abs(x float64) float64 { 13 return Float64frombits(Float64bits(x) &^ (1 << 63)) 14 } 15
