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// run
// Copyright 2009 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.
// Test iota.
package main
func assert(cond bool, msg string) {
if !cond {
print("assertion fail: ", msg, "\n")
panic(1)
}
}
const (
x int = iota
y = iota
z = 1 << iota
f float32 = 2 * iota
g float32 = 4.5 * float32(iota)
)
const (
X = 0
Y
Z
)
const (
A = 1 << iota
B
C
D
E = iota * iota
F
G
)
const (
a = 1
b = iota << a
c = iota << b
d
)
const (
i = (a << iota) + (b * iota)
j
k
l
)
const (
m = iota == 0
n
)
const (
p = float32(iota)
q
r
)
const (
s = string(iota + 'a')
t
)
const (
abit, amask = 1 << iota, 1<<iota - 1
bbit, bmask = 1 << iota, 1<<iota - 1
cbit, cmask = 1 << iota, 1<<iota - 1
)
func main() {
assert(x == 0, "x")
assert(y == 1, "y")
assert(z == 4, "z")
assert(f == 6.0, "f")
assert(g == 18.0, "g")
assert(X == 0, "X")
assert(Y == 0, "Y")
assert(Z == 0, "Z")
assert(A == 1, "A")
assert(B == 2, "B")
assert(C == 4, "C")
assert(D == 8, "D")
assert(E == 16, "E")
assert(F == 25, "F")
assert(a == 1, "a")
assert(b == 2, "b")
assert(c == 8, "c")
assert(d == 12, "d")
assert(i == 1, "i")
assert(j == 4, "j")
assert(k == 8, "k")
assert(l == 14, "l")
assert(m, "m")
assert(!n, "n")
assert(p == 0.0, "p")
assert(q == 1.0, "q")
assert(r == 2.0, "r")
assert(s == "a", "s")
assert(t == "b", "t")
assert(abit == 1, "abit")
assert(amask == 0, "amask")
assert(bbit == 2, "bbit")
assert(bmask == 1, "bmask")
assert(cbit == 4, "cbit")
assert(cmask == 3, "cmask")
}
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