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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)) }