mirror of
https://github.com/golang/go
synced 2024-11-25 08:07:57 -07:00
121 lines
1.7 KiB
Go
121 lines
1.7 KiB
Go
// $G $F.go && $L $F.$A && ./$A.out
|
|
|
|
// 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.
|
|
|
|
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 float = 2 * iota;
|
|
g float = 4.5 * float(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 = float(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");
|
|
}
|