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- // 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.
- // Copyright ©2017 The Gonum 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 math32
- import "math"
- // Signbit returns true if x is negative or negative zero.
- func Signbit(x float32) bool {
- return math.Float32bits(x)&(1<<31) != 0
- }
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