| // Copyright 2009 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 | |
| // Abs returns the absolute value of x. | |
| // | |
| // Special cases are: | |
| // Abs(±Inf) = +Inf | |
| // Abs(NaN) = NaN | |
| func Abs(x float64) float64 { | |
| return Float64frombits(Float64bits(x) &^ (1 << 63)) | |
| } |