4f4a855d82
Reviewed-on: https://go-review.googlesource.com/c/158019 gotools/: * Makefile.am (go_cmd_vet_files): Update for Go1.12beta2 release. (GOTOOLS_TEST_TIMEOUT): Increase to 600. (check-runtime): Export LD_LIBRARY_PATH before computing GOARCH and GOOS. (check-vet): Copy golang.org/x/tools into check-vet-dir. * Makefile.in: Regenerate. gcc/testsuite/: * go.go-torture/execute/names-1.go: Stop using debug/xcoff, which is no longer externally visible. From-SVN: r268084
26 lines
596 B
Go
26 lines
596 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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package cmplx
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import "math"
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// IsNaN reports whether 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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