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// 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
// Fabs returns the absolute value of x.
//
// Special cases are:
// Fabs(+Inf) = +Inf
// Fabs(-Inf) = +Inf
// Fabs(NaN) = NaN
func Fabs(x float64) float64 {
switch {
case x < 0:
return -x
case x == 0:
return 0 // return correctly fabs(-0)
}
return x
}
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