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authorMatheus Ferst <matheus.ferst@eldorado.org.br>2022-03-30 14:59:26 -0300
committerDaniel Henrique Barboza <danielhb413@gmail.com>2022-04-20 18:00:30 -0300
commit613cf0fcbabee5ec34cab85a933eb3d46845a7cb (patch)
tree5031fe9d261e1f24b9c43a99b539e5a731799136 /tests
parentf290a23868ee80c0cb8d27659e0c3b2a91437fbc (diff)
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qemu/int128: add int128_urshift
Implement an unsigned right shift for Int128 values and add the same tests cases of int128_rshift in the unit test. Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220330175932.6995-3-matheus.ferst@eldorado.org.br> [danielhb: fixed long lines in test_urshift()] Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'tests')
-rw-r--r--tests/unit/test-int128.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/tests/unit/test-int128.c b/tests/unit/test-int128.c
index b86a3c7..25db245 100644
--- a/tests/unit/test-int128.c
+++ b/tests/unit/test-int128.c
@@ -206,6 +206,55 @@ static void test_rshift(void)
test_rshift_one(0xFFFE8000U, 0, 0xFFFFFFFFFFFFFFFEULL, 0x8000000000000000ULL);
}
+static void __attribute__((__noinline__)) ATTRIBUTE_NOCLONE
+test_urshift_one(uint32_t x, int n, uint64_t h, uint64_t l)
+{
+ Int128 a = expand(x);
+ Int128 r = int128_urshift(a, n);
+ g_assert_cmpuint(int128_getlo(r), ==, l);
+ g_assert_cmpuint(int128_gethi(r), ==, h);
+}
+
+static void test_urshift(void)
+{
+ test_urshift_one(0x00010000U, 64, 0x0000000000000000ULL,
+ 0x0000000000000001ULL);
+ test_urshift_one(0x80010000U, 64, 0x0000000000000000ULL,
+ 0x8000000000000001ULL);
+ test_urshift_one(0x7FFE0000U, 64, 0x0000000000000000ULL,
+ 0x7FFFFFFFFFFFFFFEULL);
+ test_urshift_one(0xFFFE0000U, 64, 0x0000000000000000ULL,
+ 0xFFFFFFFFFFFFFFFEULL);
+ test_urshift_one(0x00010000U, 60, 0x0000000000000000ULL,
+ 0x0000000000000010ULL);
+ test_urshift_one(0x80010000U, 60, 0x0000000000000008ULL,
+ 0x0000000000000010ULL);
+ test_urshift_one(0x00018000U, 60, 0x0000000000000000ULL,
+ 0x0000000000000018ULL);
+ test_urshift_one(0x80018000U, 60, 0x0000000000000008ULL,
+ 0x0000000000000018ULL);
+ test_urshift_one(0x7FFE0000U, 60, 0x0000000000000007ULL,
+ 0xFFFFFFFFFFFFFFE0ULL);
+ test_urshift_one(0xFFFE0000U, 60, 0x000000000000000FULL,
+ 0xFFFFFFFFFFFFFFE0ULL);
+ test_urshift_one(0x7FFE8000U, 60, 0x0000000000000007ULL,
+ 0xFFFFFFFFFFFFFFE8ULL);
+ test_urshift_one(0xFFFE8000U, 60, 0x000000000000000FULL,
+ 0xFFFFFFFFFFFFFFE8ULL);
+ test_urshift_one(0x00018000U, 0, 0x0000000000000001ULL,
+ 0x8000000000000000ULL);
+ test_urshift_one(0x80018000U, 0, 0x8000000000000001ULL,
+ 0x8000000000000000ULL);
+ test_urshift_one(0x7FFE0000U, 0, 0x7FFFFFFFFFFFFFFEULL,
+ 0x0000000000000000ULL);
+ test_urshift_one(0xFFFE0000U, 0, 0xFFFFFFFFFFFFFFFEULL,
+ 0x0000000000000000ULL);
+ test_urshift_one(0x7FFE8000U, 0, 0x7FFFFFFFFFFFFFFEULL,
+ 0x8000000000000000ULL);
+ test_urshift_one(0xFFFE8000U, 0, 0xFFFFFFFFFFFFFFFEULL,
+ 0x8000000000000000ULL);
+}
+
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
@@ -219,5 +268,6 @@ int main(int argc, char **argv)
g_test_add_func("/int128/int128_ge", test_ge);
g_test_add_func("/int128/int128_gt", test_gt);
g_test_add_func("/int128/int128_rshift", test_rshift);
+ g_test_add_func("/int128/int128_urshift", test_urshift);
return g_test_run();
}