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| author | Matheus Ferst <matheus.ferst@eldorado.org.br> | 2022-03-30 14:59:26 -0300 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-04-20 18:00:30 -0300 |
| commit | 613cf0fcbabee5ec34cab85a933eb3d46845a7cb (patch) | |
| tree | 5031fe9d261e1f24b9c43a99b539e5a731799136 /tests/unit/test-int128.c | |
| parent | f290a23868ee80c0cb8d27659e0c3b2a91437fbc (diff) | |
| download | qemu-613cf0fcbabee5ec34cab85a933eb3d46845a7cb.zip qemu-613cf0fcbabee5ec34cab85a933eb3d46845a7cb.tar.gz qemu-613cf0fcbabee5ec34cab85a933eb3d46845a7cb.tar.bz2 | |
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/unit/test-int128.c')
| -rw-r--r-- | tests/unit/test-int128.c | 50 |
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(); } |