gcc/testsuite/go.test/test/iota.go

   1 // $G $F.go && $L $F.$A && ./$A.out
   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 package main
   8
   9 func assert(cond bool, msg string) {
  10         if !cond {
  11                 print("assertion fail: ", msg, "\n")
  12                 panic(1)
  13         }
  14 }
  15
  16 const (
  17         x int = iota
  18         y = iota
  19         z = 1 << iota
  20         f float = 2 * iota
  21         g float = 4.5 * float(iota)
  22 )
  23
  24 const (
  25         X = 0
  26         Y
  27         Z
  28 )
  29
  30 const (
  31         A = 1 << iota
  32         B
  33         C
  34         D
  35         E = iota * iota
  36         F
  37         G
  38 )
  39
  40 const (
  41         a = 1
  42         b = iota << a
  43         c = iota << b
  44         d
  45 )
  46
  47 const (
  48         i = (a << iota) + (b * iota)
  49         j
  50         k
  51         l
  52 )
  53
  54 const (
  55         m = iota == 0
  56         n
  57 )
  58
  59 const (
  60         p = float(iota)
  61         q
  62         r
  63 )
  64
  65 const (
  66         s = string(iota + 'a')
  67         t
  68 )
  69
  70 const (
  71         abit, amask = 1 << iota, 1 << iota - 1
  72         bbit, bmask = 1 << iota, 1 << iota - 1
  73         cbit, cmask = 1 << iota, 1 << iota - 1
  74 )
  75
  76 func main() {
  77         assert(x == 0, "x")
  78         assert(y == 1, "y")
  79         assert(z == 4, "z")
  80         assert(f == 6.0, "f")
  81         assert(g == 18.0, "g")
  82
  83         assert(X == 0, "X")
  84         assert(Y == 0, "Y")
  85         assert(Z == 0, "Z")
  86
  87         assert(A == 1, "A")
  88         assert(B == 2, "B")
  89         assert(C == 4, "C")
  90         assert(D == 8, "D")
  91         assert(E == 16, "E")
  92         assert(F == 25, "F")
  93
  94         assert(a == 1, "a")
  95         assert(b == 2, "b")
  96         assert(c == 8, "c")
  97         assert(d == 12, "d")
  98
  99         assert(i == 1, "i")
 100         assert(j == 4, "j")
 101         assert(k == 8, "k")
 102         assert(l == 14, "l")
 103
 104         assert(m, "m")
 105         assert(!n, "n")
 106
 107         assert(p == 0.0, "p")
 108         assert(q == 1.0, "q")
 109         assert(r == 2.0, "r")
 110
 111         assert(s == "a", "s")
 112         assert(t == "b", "t")
 113
 114         assert(abit == 1, "abit")
 115         assert(amask == 0, "amask")
 116         assert(bbit == 2, "bbit")
 117         assert(bmask == 1, "bmask")
 118         assert(cbit == 4, "cbit")
 119         assert(cmask == 3, "cmask")
 120 }