go abs 源码
golang abs 代码
文件路径：/src/math/abs.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
// 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))
}
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