go/test/ken/cplx3.go
Ken Thompson 2edb02b41e 1. decommit complex(float) conversion
2. add complex algorithm for map/chan
3. test for use of complex in
   array, slice, field, chan, map,
   field, pointer.

R=rsc
CC=golang-dev
https://golang.org/cl/384041
2010-03-09 17:51:30 -08:00

43 lines
751 B
Go

// $G $D/$F.go && $L $F.$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.
package main
import "unsafe"
import "reflect"
const (
R = 5
I = 6i
C1 = R + I // ADD(5,6)
)
var complexBits = reflect.Typeof(complex(0i)).Size() * 8
func main() {
c0 := C1
c0 = (c0 + c0 + c0) / (c0 + c0 + 3i)
println(c0)
c := *(*complex)(unsafe.Pointer(&c0))
println(c)
println(complexBits)
var a interface{}
switch c := reflect.NewValue(a).(type) {
case *reflect.Complex64Value:
v := c.Get()
_, _ = complex64(v), true
case *reflect.ComplexValue:
if complexBits == 64 {
v := c.Get()
_, _ = complex64(v), true
}
}
}