github.com/twelsh-aw/go/src@v0.0.0-20230516233729-a56fe86a7c81/math/abs.go (about)

     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  //
    11  //	Abs(±Inf) = +Inf
    12  //	Abs(NaN) = NaN
    13  func Abs(x float64) float64 {
    14  	return Float64frombits(Float64bits(x) &^ (1 << 63))
    15  }