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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [math/] [cmplx/] [isnan.go] - Blame information for rev 747

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1 747 jeremybenn
// 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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package cmplx
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import "math"
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// IsNaN returns true if either real(x) or imag(x) is NaN
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// and neither is an infinity.
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func IsNaN(x complex128) bool {
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        switch {
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        case math.IsInf(real(x), 0) || math.IsInf(imag(x), 0):
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                return false
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        case math.IsNaN(real(x)) || math.IsNaN(imag(x)):
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                return true
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        }
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        return false
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}
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// NaN returns a complex ``not-a-number'' value.
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func NaN() complex128 {
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        nan := math.NaN()
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        return complex(nan, nan)
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}

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