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abs.go

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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

// 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))

}