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go/test/cmplxdivide.go
Russ Cox 21ff75bc0e complex divide: match C99 implementation
R=iant, ken2, r, r2, ken3
CC=golang-dev
https://golang.org/cl/1686044
2010-06-18 15:46:00 -07:00

44 lines
808 B
Go

// $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)
}
}
}