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17 lines
489 B
Go
17 lines
489 B
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Copyright ©2017 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package math32
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import "math"
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// Signbit returns true if x is negative or negative zero.
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func Signbit(x float32) bool {
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return math.Float32bits(x)&(1<<31) != 0
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}
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