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3b63b69d2f
The various files are confusingly named and their operation not easy to see. Add a comment to cmplxdivide.c, one of the few C files that will endure in the repository, to explain how to build and run the test. Change-Id: I1fd5c564a14217e1b9815b09bc24cc43c54c096f Reviewed-on: https://go-review.googlesource.com/2850 Reviewed-by: Russ Cox <rsc@golang.org>
53 lines
958 B
Go
53 lines
958 B
Go
// run cmplxdivide1.go
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// 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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// Driver for complex division table defined in cmplxdivide1.go
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// For details, see the comment at the top of in cmplxdivide.c.
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package main
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import (
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"fmt"
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"math"
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"math/cmplx"
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)
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type Test struct {
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f, g complex128
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out complex128
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}
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var nan = math.NaN()
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var inf = math.Inf(1)
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var negzero = math.Copysign(0, -1)
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func calike(a, b complex128) bool {
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switch {
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case cmplx.IsInf(a) && cmplx.IsInf(b):
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return true
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case cmplx.IsNaN(a) && cmplx.IsNaN(b):
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return true
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}
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return a == b
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}
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func main() {
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bad := false
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for _, t := range tests {
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x := t.f / t.g
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if !calike(x, t.out) {
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if !bad {
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fmt.Printf("BUG\n")
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bad = true
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}
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fmt.Printf("%v/%v: expected %v error; got %v\n", t.f, t.g, t.out, x)
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}
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}
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if bad {
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panic("cmplxdivide failed.")
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}
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}
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