1/* Test mpz_divexact_ui.
2
3Copyright 1996, 2001 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library test suite.
6
7The GNU MP Library test suite is free software; you can redistribute it
8and/or modify it under the terms of the GNU General Public License as
9published by the Free Software Foundation; either version 3 of the License,
10or (at your option) any later version.
11
12The GNU MP Library test suite is distributed in the hope that it will be
13useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
15Public License for more details.
16
17You should have received a copy of the GNU General Public License along with
18the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
19
20#include <stdio.h>
21#include <stdlib.h>
22
23#include "gmp-impl.h"
24#include "tests.h"
25
26
27void
28check_random (int argc, char *argv[])
29{
30  gmp_randstate_ptr rands = RANDS;
31  int    reps = 500000;
32  mpz_t  a, q, got;
33  int    i, qneg;
34  unsigned long  d;
35
36  if (argc == 2)
37    reps = atoi (argv[1]);
38
39  mpz_init (a);
40  mpz_init (q);
41  mpz_init (got);
42
43  for (i = 0; i < reps; i++)
44    {
45      do
46	d = (unsigned long) urandom();
47      while (d == 0);
48      mpz_erandomb (q, rands, 512);
49      mpz_mul_ui (a, q, d);
50
51      for (qneg = 0; qneg <= 1; qneg++)
52        {
53          mpz_divexact_ui (got, a, d);
54          MPZ_CHECK_FORMAT (got);
55          if (mpz_cmp (got, q) != 0)
56            {
57              printf    ("mpz_divexact_ui wrong\n");
58              mpz_trace ("    a", a);
59              printf    ("    d=%lu\n", d);
60              mpz_trace ("    q", q);
61              mpz_trace ("  got", got);
62              abort ();
63            }
64
65          mpz_neg (q, q);
66          mpz_neg (a, a);
67        }
68
69    }
70
71  mpz_clear (a);
72  mpz_clear (q);
73  mpz_clear (got);
74}
75
76
77int
78main (int argc, char **argv)
79{
80  tests_start ();
81
82  check_random (argc, argv);
83
84  tests_end ();
85  exit (0);
86}
87