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author | Russ Cox <rsc@golang.org> | 2010-06-18 15:46:00 -0700 |
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committer | Russ Cox <rsc@golang.org> | 2010-06-18 15:46:00 -0700 |
commit | 21ff75bc0efc34675775168ccae118cd286f904c (patch) | |
tree | 40872ae2605d1035840d074ff7d6c1418b9113c4 /test/cmplxdivide.go | |
parent | 99b23a1e5bba7c02184e7875789e25bac21e153b (diff) | |
download | go-21ff75bc0efc34675775168ccae118cd286f904c.tar.gz go-21ff75bc0efc34675775168ccae118cd286f904c.zip |
complex divide: match C99 implementation
R=iant, ken2, r, r2, ken3
CC=golang-dev
https://golang.org/cl/1686044
Diffstat (limited to 'test/cmplxdivide.go')
-rw-r--r-- | test/cmplxdivide.go | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/test/cmplxdivide.go b/test/cmplxdivide.go new file mode 100644 index 0000000000..ac4730d647 --- /dev/null +++ b/test/cmplxdivide.go @@ -0,0 +1,43 @@ +// $G $D/$F.go $D/cmplxdivide1.go && $L $D/$F.$A && ./$A.out + +// 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. + +// Driver for complex division table defined in cmplxdivide1.go + +package main + +import ( + "cmath" + "fmt" + "math" +) + +type Test struct{ + f, g complex128 + out complex128 +} + +var nan = math.NaN() +var inf = math.Inf(1) +var negzero = math.Copysign(0, -1) + +func calike(a, b complex128) bool { + switch { + case cmath.IsInf(a) && cmath.IsInf(b): + return true + case cmath.IsNaN(a) && cmath.IsNaN(b): + return true + } + return a == b +} + +func main() { + for _, t := range tests { + x := t.f/t.g + if !calike(x, t.out) { + fmt.Printf("%v/%v: expected %v error; got %v\n", t.f, t.g, t.out, x) + } + } +} |