Annotation of OpenXM_contrib/gmp/tests/mpq/t-cmp_ui.c, Revision 1.1.1.1
1.1 ohara 1: /* Test mpq_cmp_ui.
2:
3: Copyright 1996, 1997, 2001 Free Software Foundation, Inc.
4:
5: This file is part of the GNU MP Library.
6:
7: The GNU MP Library is free software; you can redistribute it and/or modify
8: it under the terms of the GNU Lesser General Public License as published by
9: the Free Software Foundation; either version 2.1 of the License, or (at your
10: option) any later version.
11:
12: The GNU MP Library is distributed in the hope that it will be useful, but
13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15: License for more details.
16:
17: You should have received a copy of the GNU Lesser General Public License
18: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20: MA 02111-1307, USA. */
21:
22: #include <stdio.h>
23: #include <stdlib.h>
24:
25: #include "gmp.h"
26: #include "gmp-impl.h"
27: #include "tests.h"
28:
29: #define NUM(x) (&((x)->_mp_num))
30: #define DEN(x) (&((x)->_mp_den))
31:
32: #define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
33:
34: int
35: ref_mpq_cmp_ui (mpq_t a, unsigned long int bn, unsigned long int bd)
36: {
37: mpz_t ai, bi;
38: int cc;
39:
40: mpz_init (ai);
41: mpz_init (bi);
42:
43: mpz_mul_ui (ai, NUM (a), bd);
44: mpz_mul_ui (bi, DEN (a), bn);
45: cc = mpz_cmp (ai, bi);
46: mpz_clear (ai);
47: mpz_clear (bi);
48: return cc;
49: }
50:
51: #ifndef SIZE
52: #define SIZE 8 /* increasing this lowers the probabilty of finding an error */
53: #endif
54:
55: int
56: main (int argc, char **argv)
57: {
58: mpq_t a, b;
59: mp_size_t size;
60: int reps = 100000;
61: int i;
62: int cc, ccref;
63: unsigned long int bn, bd;
64:
65: tests_start ();
66:
67: if (argc == 2)
68: reps = atoi (argv[1]);
69:
70: mpq_init (a);
71: mpq_init (b);
72:
73: for (i = 0; i < reps; i++)
74: {
75: size = urandom () % SIZE - SIZE/2;
76: mpz_random2 (NUM (a), size);
77: do
78: {
79: size = urandom () % SIZE - SIZE/2;
80: mpz_random2 (DEN (a), size);
81: }
82: while (mpz_cmp_ui (DEN (a), 0) == 0);
83:
84: mpz_random2 (NUM (b), 1);
85: mpz_mod_ui (NUM (b), NUM (b), ~(unsigned long int) 0);
86: mpz_add_ui (NUM (b), NUM (b), 1);
87:
88: mpz_random2 (DEN (b), 1);
89: mpz_mod_ui (DEN (b), DEN (b), ~(unsigned long int) 0);
90: mpz_add_ui (DEN (b), DEN (b), 1);
91:
92: mpq_canonicalize (a);
93: mpq_canonicalize (b);
94:
95: bn = mpz_get_ui (NUM (b));
96: bd = mpz_get_ui (DEN (b));
97:
98: ccref = ref_mpq_cmp_ui (a, bn, bd);
99: cc = mpq_cmp_ui (a, bn, bd);
100:
101: if (SGN (ccref) != SGN (cc))
102: abort ();
103: }
104:
105: mpq_clear (a);
106: mpq_clear (b);
107:
108: tests_end ();
109: exit (0);
110: }
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