test-mul64.c (1738B)
1 /* 2 * Test 64x64 -> 128 multiply subroutines 3 * 4 * This work is licensed under the terms of the GNU LGPL, version 2 or later. 5 * See the COPYING.LIB file in the top-level directory. 6 * 7 */ 8 9 #include "qemu/osdep.h" 10 #include "qemu/host-utils.h" 11 12 13 typedef struct { 14 uint64_t a, b; 15 uint64_t rh, rl; 16 } Test; 17 18 static const Test test_u_data[] = { 19 { 1, 1, 0, 1 }, 20 { 10000, 10000, 0, 100000000 }, 21 { 0xffffffffffffffffULL, 2, 1, 0xfffffffffffffffeULL }, 22 { 0xffffffffffffffffULL, 0xffffffffffffffffULL, 23 0xfffffffffffffffeULL, 0x0000000000000001ULL }, 24 { 0x1122334455667788ull, 0x8877665544332211ull, 25 0x092228fb777ae38full, 0x0a3e963337c60008ull }, 26 }; 27 28 static const Test test_s_data[] = { 29 { 1, 1, 0, 1 }, 30 { 1, -1, -1, -1 }, 31 { -10, -10, 0, 100 }, 32 { 10000, 10000, 0, 100000000 }, 33 { -1, 2, -1, -2 }, 34 { 0x1122334455667788ULL, 0x1122334455667788ULL, 35 0x01258f60bbc2975cULL, 0x1eace4a3c82fb840ULL }, 36 }; 37 38 static void test_u(void) 39 { 40 int i; 41 42 for (i = 0; i < ARRAY_SIZE(test_u_data); ++i) { 43 uint64_t rl, rh; 44 mulu64(&rl, &rh, test_u_data[i].a, test_u_data[i].b); 45 g_assert_cmpuint(rl, ==, test_u_data[i].rl); 46 g_assert_cmpuint(rh, ==, test_u_data[i].rh); 47 } 48 } 49 50 static void test_s(void) 51 { 52 int i; 53 54 for (i = 0; i < ARRAY_SIZE(test_s_data); ++i) { 55 uint64_t rl, rh; 56 muls64(&rl, &rh, test_s_data[i].a, test_s_data[i].b); 57 g_assert_cmpuint(rl, ==, test_s_data[i].rl); 58 g_assert_cmpint(rh, ==, test_s_data[i].rh); 59 } 60 } 61 62 int main(int argc, char **argv) 63 { 64 g_test_init(&argc, &argv, NULL); 65 g_test_add_func("/host-utils/mulu64", test_u); 66 g_test_add_func("/host-utils/muls64", test_s); 67 return g_test_run(); 68 }