mirror of
https://github.com/golang/go
synced 2024-11-02 13:42:29 +00:00
61 lines
1 KiB
Go
61 lines
1 KiB
Go
// run
|
|
|
|
// 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.
|
|
|
|
// Test complex numbers,including fmt support.
|
|
// Used to crash.
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
const (
|
|
R = 5
|
|
I = 6i
|
|
|
|
C1 = R + I // ADD(5,6)
|
|
)
|
|
|
|
func want(s, w string) {
|
|
if s != w {
|
|
panic(s + " != " + w)
|
|
}
|
|
}
|
|
|
|
func doprint(c complex128, w string) {
|
|
s := fmt.Sprintf("%f", c)
|
|
want(s, w)
|
|
}
|
|
|
|
func main() {
|
|
|
|
// constants
|
|
s := fmt.Sprintf("%f", -C1)
|
|
want(s, "(-5.000000-6.000000i)")
|
|
doprint(C1, "(5.000000+6.000000i)")
|
|
|
|
// variables
|
|
c1 := C1
|
|
s = fmt.Sprintf("%f", c1)
|
|
want(s, "(5.000000+6.000000i)")
|
|
doprint(c1, "(5.000000+6.000000i)")
|
|
|
|
// 128
|
|
c2 := complex128(C1)
|
|
s = fmt.Sprintf("%G", c2)
|
|
want(s, "(5+6i)")
|
|
|
|
// real, imag, complex
|
|
c3 := complex(real(c2)+3, imag(c2)-5) + c2
|
|
s = fmt.Sprintf("%G", c3)
|
|
want(s, "(13+7i)")
|
|
|
|
// compiler used to crash on nested divide
|
|
c4 := complex(real(c3/2), imag(c3/2))
|
|
if c4 != c3/2 {
|
|
fmt.Printf("BUG: c3 = %G != c4 = %G\n", c3, c4)
|
|
panic(0)
|
|
}
|
|
}
|