/usr/share/go-1.6/src/math/signbit.go is in golang-1.6-src 1.6.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 | // Copyright 2010 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
// Signbit returns true if x is negative or negative zero.
func Signbit(x float64) bool {
return Float64bits(x)&(1<<63) != 0
}
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