LXR qemu/tests/test-mul64.c

   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 <glib.h>
  10#include <stdint.h>
  11#include "qemu/host-utils.h"
  12#include "qemu/osdep.h"
  13
  14
  15typedef struct {
  16    uint64_t a, b;
  17    uint64_t rh, rl;
  18} Test;
  19
  20static const Test test_u_data[] = {
  21    { 1, 1, 0, 1 },
  22    { 10000, 10000, 0, 100000000 },
  23    { 0xffffffffffffffffULL, 2, 1, 0xfffffffffffffffeULL },
  24    { 0xffffffffffffffffULL, 0xffffffffffffffffULL,
  25      0xfffffffffffffffeULL, 0x0000000000000001ULL },
  26    { 0x1122334455667788ull, 0x8877665544332211ull,
  27      0x092228fb777ae38full, 0x0a3e963337c60008ull },
  28};
  29
  30static const Test test_s_data[] = {
  31    { 1, 1, 0, 1 },
  32    { 1, -1, -1, -1 },
  33    { -10, -10, 0, 100 },
  34    { 10000, 10000, 0, 100000000 },
  35    { -1, 2, -1, -2 },
  36    { 0x1122334455667788ULL, 0x1122334455667788ULL,
  37      0x01258f60bbc2975cULL, 0x1eace4a3c82fb840ULL },
  38};
  39
  40static void test_u(void)
  41{
  42    int i;
  43
  44    for (i = 0; i < ARRAY_SIZE(test_u_data); ++i) {
  45        uint64_t rl, rh;
  46        mulu64(&rl, &rh, test_u_data[i].a, test_u_data[i].b);
  47        g_assert_cmpuint(rl, ==, test_u_data[i].rl);
  48        g_assert_cmpuint(rh, ==, test_u_data[i].rh);
  49    }
  50}
  51
  52static void test_s(void)
  53{
  54    int i;
  55
  56    for (i = 0; i < ARRAY_SIZE(test_s_data); ++i) {
  57        uint64_t rl, rh;
  58        muls64(&rl, &rh, test_s_data[i].a, test_s_data[i].b);
  59        g_assert_cmpuint(rl, ==, test_s_data[i].rl);
  60        g_assert_cmpint(rh, ==, test_s_data[i].rh);
  61    }
  62}
  63
  64int main(int argc, char **argv)
  65{
  66    g_test_init(&argc, &argv, NULL);
  67    g_test_add_func("/host-utils/mulu64", test_u);
  68    g_test_add_func("/host-utils/muls64", test_s);
  69    return g_test_run();
  70}
  71