mirror of
https://github.com/golang/go
synced 2024-11-14 07:30:22 -07:00
fc090a3a54
gob: substitute slice for map R=r CC=golang-dev https://golang.org/cl/1699045
40 lines
677 B
Go
40 lines
677 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.ComplexValue:
|
|
if complexBits == 64 {
|
|
v := c.Get()
|
|
_, _ = complex64(v), true
|
|
}
|
|
}
|
|
}
|