1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
package sys_test
import (
"runtime/internal/sys"
"testing"
)
func TestTrailingZeros64(t *testing.T) {
for i := 0; i <= 64; i++ {
x := uint64(5) << uint(i)
if got := sys.TrailingZeros64(x); got != i {
t.Errorf("TrailingZeros64(%d)=%d, want %d", x, got, i)
}
}
}
func TestTrailingZeros32(t *testing.T) {
for i := 0; i <= 32; i++ {
x := uint32(5) << uint(i)
if got := sys.TrailingZeros32(x); got != i {
t.Errorf("TrailingZeros32(%d)=%d, want %d", x, got, i)
}
}
}
func TestBswap64(t *testing.T) {
x := uint64(0x1122334455667788)
y := sys.Bswap64(x)
if y != 0x8877665544332211 {
t.Errorf("Bswap(%x)=%x, want 0x8877665544332211", x, y)
}
}
func TestBswap32(t *testing.T) {
x := uint32(0x11223344)
y := sys.Bswap32(x)
if y != 0x44332211 {
t.Errorf("Bswap(%x)=%x, want 0x44332211", x, y)
}
}
|
