test/intcvt.go

   1 // run
   2
   3 // Copyright 2009 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 // Test implicit and explicit conversions of constants.
   8
   9 package main
  10
  11 const (
  12         ci8  = -1 << 7
  13         ci16 = -1<<15 + 100
  14         ci32 = -1<<31 + 100000
  15         ci64 = -1<<63 + 10000000001
  16
  17         cu8  = 1<<8 - 1
  18         cu16 = 1<<16 - 1234
  19         cu32 = 1<<32 - 1234567
  20         cu64 = 1<<64 - 1234567890123
  21
  22         cf32 = 1e8 + 0.5
  23         cf64 = -1e8 + 0.5
  24 )
  25
  26 var (
  27         i8  int8  = ci8
  28         i16 int16 = ci16
  29         i32 int32 = ci32
  30         i64 int64 = ci64
  31
  32         u8  uint8  = cu8
  33         u16 uint16 = cu16
  34         u32 uint32 = cu32
  35         u64 uint64 = cu64
  36
  37         //      f32 float32 = 1e8 + 0.5
  38         //      f64 float64 = -1e8 + 0.5
  39 )
  40
  41 func chki8(i, v int8) {
  42         if i != v {
  43                 println(i, "!=", v)
  44                 panic("fail")
  45         }
  46 }
  47 func chki16(i, v int16) {
  48         if i != v {
  49                 println(i, "!=", v)
  50                 panic("fail")
  51         }
  52 }
  53 func chki32(i, v int32) {
  54         if i != v {
  55                 println(i, "!=", v)
  56                 panic("fail")
  57         }
  58 }
  59 func chki64(i, v int64) {
  60         if i != v {
  61                 println(i, "!=", v)
  62                 panic("fail")
  63         }
  64 }
  65 func chku8(i, v uint8) {
  66         if i != v {
  67                 println(i, "!=", v)
  68                 panic("fail")
  69         }
  70 }
  71 func chku16(i, v uint16) {
  72         if i != v {
  73                 println(i, "!=", v)
  74                 panic("fail")
  75         }
  76 }
  77 func chku32(i, v uint32) {
  78         if i != v {
  79                 println(i, "!=", v)
  80                 panic("fail")
  81         }
  82 }
  83 func chku64(i, v uint64) {
  84         if i != v {
  85                 println(i, "!=", v)
  86                 panic("fail")
  87         }
  88 }
  89 //func chkf32(f, v float32) { if f != v { println(f, "!=", v); panic("fail") } }
  90 //func chkf64(f, v float64) { if f != v { println(f, "!=", v); panic("fail") } }
  91
  92 func main() {
  93         chki8(int8(i8), ci8&0xff-1<<8)
  94         chki8(int8(i16), ci16&0xff)
  95         chki8(int8(i32), ci32&0xff-1<<8)
  96         chki8(int8(i64), ci64&0xff)
  97         chki8(int8(u8), cu8&0xff-1<<8)
  98         chki8(int8(u16), cu16&0xff)
  99         chki8(int8(u32), cu32&0xff)
 100         chki8(int8(u64), cu64&0xff)
 101         //      chki8(int8(f32), 0)
 102         //      chki8(int8(f64), 0)
 103
 104         chki16(int16(i8), ci8&0xffff-1<<16)
 105         chki16(int16(i16), ci16&0xffff-1<<16)
 106         chki16(int16(i32), ci32&0xffff-1<<16)
 107         chki16(int16(i64), ci64&0xffff-1<<16)
 108         chki16(int16(u8), cu8&0xffff)
 109         chki16(int16(u16), cu16&0xffff-1<<16)
 110         chki16(int16(u32), cu32&0xffff)
 111         chki16(int16(u64), cu64&0xffff-1<<16)
 112         //      chki16(int16(f32), 0)
 113         //      chki16(int16(f64), 0)
 114
 115         chki32(int32(i8), ci8&0xffffffff-1<<32)
 116         chki32(int32(i16), ci16&0xffffffff-1<<32)
 117         chki32(int32(i32), ci32&0xffffffff-1<<32)
 118         chki32(int32(i64), ci64&0xffffffff)
 119         chki32(int32(u8), cu8&0xffffffff)
 120         chki32(int32(u16), cu16&0xffffffff)
 121         chki32(int32(u32), cu32&0xffffffff-1<<32)
 122         chki32(int32(u64), cu64&0xffffffff-1<<32)
 123         //      chki32(int32(f32), 0)
 124         //      chki32(int32(f64), 0)
 125
 126         chki64(int64(i8), ci8&0xffffffffffffffff-1<<64)
 127         chki64(int64(i16), ci16&0xffffffffffffffff-1<<64)
 128         chki64(int64(i32), ci32&0xffffffffffffffff-1<<64)
 129         chki64(int64(i64), ci64&0xffffffffffffffff-1<<64)
 130         chki64(int64(u8), cu8&0xffffffffffffffff)
 131         chki64(int64(u16), cu16&0xffffffffffffffff)
 132         chki64(int64(u32), cu32&0xffffffffffffffff)
 133         chki64(int64(u64), cu64&0xffffffffffffffff-1<<64)
 134         //      chki64(int64(f32), 0)
 135         //      chki64(int64(f64), 0)
 136
 137
 138         chku8(uint8(i8), ci8&0xff)
 139         chku8(uint8(i16), ci16&0xff)
 140         chku8(uint8(i32), ci32&0xff)
 141         chku8(uint8(i64), ci64&0xff)
 142         chku8(uint8(u8), cu8&0xff)
 143         chku8(uint8(u16), cu16&0xff)
 144         chku8(uint8(u32), cu32&0xff)
 145         chku8(uint8(u64), cu64&0xff)
 146         //      chku8(uint8(f32), 0)
 147         //      chku8(uint8(f64), 0)
 148
 149         chku16(uint16(i8), ci8&0xffff)
 150         chku16(uint16(i16), ci16&0xffff)
 151         chku16(uint16(i32), ci32&0xffff)
 152         chku16(uint16(i64), ci64&0xffff)
 153         chku16(uint16(u8), cu8&0xffff)
 154         chku16(uint16(u16), cu16&0xffff)
 155         chku16(uint16(u32), cu32&0xffff)
 156         chku16(uint16(u64), cu64&0xffff)
 157         //      chku16(uint16(f32), 0)
 158         //      chku16(uint16(f64), 0)
 159
 160         chku32(uint32(i8), ci8&0xffffffff)
 161         chku32(uint32(i16), ci16&0xffffffff)
 162         chku32(uint32(i32), ci32&0xffffffff)
 163         chku32(uint32(i64), ci64&0xffffffff)
 164         chku32(uint32(u8), cu8&0xffffffff)
 165         chku32(uint32(u16), cu16&0xffffffff)
 166         chku32(uint32(u32), cu32&0xffffffff)
 167         chku32(uint32(u64), cu64&0xffffffff)
 168         //      chku32(uint32(f32), 0)
 169         //      chku32(uint32(f64), 0)
 170
 171         chku64(uint64(i8), ci8&0xffffffffffffffff)
 172         chku64(uint64(i16), ci16&0xffffffffffffffff)
 173         chku64(uint64(i32), ci32&0xffffffffffffffff)
 174         chku64(uint64(i64), ci64&0xffffffffffffffff)
 175         chku64(uint64(u8), cu8&0xffffffffffffffff)
 176         chku64(uint64(u16), cu16&0xffffffffffffffff)
 177         chku64(uint64(u32), cu32&0xffffffffffffffff)
 178         chku64(uint64(u64), cu64&0xffffffffffffffff)
 179         //      chku64(uint64(f32), 0)
 180         //      chku64(uint64(f64), 0)
 181 }