f4c0f986c0
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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* Test 64x64 -> 128 multiply subroutines
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include <glib.h>
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#include <stdint.h>
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#include "qemu/host-utils.h"
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#include "qemu/osdep.h"
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typedef struct {
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uint64_t a, b;
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uint64_t rh, rl;
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} Test;
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static const Test test_u_data[] = {
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{ 1, 1, 0, 1 },
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{ 10000, 10000, 0, 100000000 },
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{ 0xffffffffffffffffULL, 2, 1, 0xfffffffffffffffeULL },
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{ 0xffffffffffffffffULL, 0xffffffffffffffffULL,
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0xfffffffffffffffeULL, 0x0000000000000001ULL },
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{ 0x1122334455667788ull, 0x8877665544332211ull,
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0x092228fb777ae38full, 0x0a3e963337c60008ull },
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};
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static const Test test_s_data[] = {
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{ 1, 1, 0, 1 },
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{ 1, -1, -1, -1 },
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{ -10, -10, 0, 100 },
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{ 10000, 10000, 0, 100000000 },
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{ -1, 2, -1, -2 },
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{ 0x1122334455667788ULL, 0x1122334455667788ULL,
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0x01258f60bbc2975cULL, 0x1eace4a3c82fb840ULL },
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};
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static void test_u(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_u_data); ++i) {
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uint64_t rl, rh;
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mulu64(&rl, &rh, test_u_data[i].a, test_u_data[i].b);
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g_assert_cmpuint(rl, ==, test_u_data[i].rl);
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g_assert_cmpuint(rh, ==, test_u_data[i].rh);
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}
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}
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static void test_s(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(test_s_data); ++i) {
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uint64_t rl, rh;
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muls64(&rl, &rh, test_s_data[i].a, test_s_data[i].b);
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g_assert_cmpuint(rl, ==, test_s_data[i].rl);
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g_assert_cmpint(rh, ==, test_s_data[i].rh);
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}
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/host-utils/mulu64", test_u);
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g_test_add_func("/host-utils/muls64", test_s);
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return g_test_run();
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}
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