go intrinsics_test 源码
golang intrinsics_test 代码
文件路径：/src/runtime/internal/sys/intrinsics_test.go
package sys_test
import (
"runtime/internal/sys"
"testing"
)
func TestCtz64(t *testing.T) {
for i := 0; i <= 64; i++ {
x := uint64(5) << uint(i)
if got := sys.Ctz64(x); got != i {
t.Errorf("Ctz64(%d)=%d, want %d", x, got, i)
}
}
}
func TestCtz32(t *testing.T) {
for i := 0; i <= 32; i++ {
x := uint32(5) << uint(i)
if got := sys.Ctz32(x); got != i {
t.Errorf("Ctz32(%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)
}
}
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