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Source file src/pkg/math/fabs.go

// 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
}