gcc/testsuite/go.test/test/ken/cplx3.go

   1 // $G $D/$F.go && $L $F.$A && ./$A.out
   2
   3 // Copyright 2010 The Go Authors. All rights reserved.
   4 // Use of this source code is governed by a BSD-style
   5 // license that can be found in the LICENSE file.
   6
   7 package main
   8
   9 import "unsafe"
  10 import "reflect"
  11
  12 const (
  13         R = 5
  14         I = 6i
  15
  16         C1 = R + I // ADD(5,6)
  17 )
  18
  19 var complexBits = reflect.Typeof(complex(0i)).Size() * 8
  20
  21 func main() {
  22         c0 := C1
  23         c0 = (c0 + c0 + c0) / (c0 + c0 + 3i)
  24         println(c0)
  25
  26         c := *(*complex)(unsafe.Pointer(&c0))
  27         println(c)
  28
  29         println(complexBits)
  30
  31         var a interface{}
  32         switch c := reflect.NewValue(a).(type) {
  33         case *reflect.ComplexValue:
  34                 if complexBits == 64 {
  35                         v := c.Get()
  36                         _, _ = complex64(v), true
  37                 }
  38         }
  39 }