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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /src/runtime/internal/sys/intrinsics_test.go
parentInitial commit. (diff)
downloadgolang-1.20-upstream.tar.xz
golang-1.20-upstream.zip
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/internal/sys/intrinsics_test.go')
-rw-r--r--src/runtime/internal/sys/intrinsics_test.go38
1 files changed, 38 insertions, 0 deletions
diff --git a/src/runtime/internal/sys/intrinsics_test.go b/src/runtime/internal/sys/intrinsics_test.go
new file mode 100644
index 0000000..bf75f19
--- /dev/null
+++ b/src/runtime/internal/sys/intrinsics_test.go
@@ -0,0 +1,38 @@
+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)
+ }
+}