Annotation of OpenXM_contrib/gmp/tests/mpq/t-cmp.c, Revision 1.1.1.1
1.1 ohara 1: /* Test mpq_cmp.
2:
3: Copyright 1996, 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 (mpq_t a, mpq_t b)
36: {
37: mpz_t ai, bi;
38: int cc;
39:
40: mpz_init (ai);
41: mpz_init (bi);
42:
43: mpz_mul (ai, NUM (a), DEN (b));
44: mpz_mul (bi, NUM (b), DEN (a));
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:
64: tests_start ();
65:
66: if (argc == 2)
67: reps = atoi (argv[1]);
68:
69: mpq_init (a);
70: mpq_init (b);
71:
72: for (i = 0; i < reps; i++)
73: {
74: size = urandom () % SIZE - SIZE/2;
75: mpz_random2 (NUM (a), size);
76: do
77: {
78: size = urandom () % SIZE - SIZE/2;
79: mpz_random2 (DEN (a), size);
80: }
81: while (mpz_cmp_ui (DEN (a), 0) == 0);
82:
83: size = urandom () % SIZE - SIZE/2;
84: mpz_random2 (NUM (b), size);
85: do
86: {
87: size = urandom () % SIZE - SIZE/2;
88: mpz_random2 (DEN (b), size);
89: }
90: while (mpz_cmp_ui (DEN (b), 0) == 0);
91:
92: mpq_canonicalize (a);
93: mpq_canonicalize (b);
94:
95: ccref = ref_mpq_cmp (a, b);
96: cc = mpq_cmp (a, b);
97:
98: if (SGN (ccref) != SGN (cc))
99: abort ();
100: }
101:
102: mpq_clear (a);
103: mpq_clear (b);
104:
105: tests_end ();
106: exit (0);
107: }
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