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Annotation of OpenXM_contrib/gmp/mpq/tests/t-cmp.c, Revision 1.1

1.1     ! maekawa     1: /* Test mpq_cmp.
        !             2:
        !             3: Copyright (C) 1996 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 Library General Public License as published by
        !             9: the Free Software Foundation; either version 2 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 Library General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Library 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 "gmp.h"
        !            24: #include "gmp-impl.h"
        !            25: #include "urandom.h"
        !            26:
        !            27: #define NUM(x) (&((x)->_mp_num))
        !            28: #define DEN(x) (&((x)->_mp_den))
        !            29:
        !            30: #define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
        !            31:
        !            32: ref_mpq_cmp (a, b)
        !            33:      mpq_t a, b;
        !            34: {
        !            35:   mpz_t ai, bi;
        !            36:   int cc;
        !            37:
        !            38:   mpz_init (ai);
        !            39:   mpz_init (bi);
        !            40:
        !            41:   mpz_mul (ai, NUM (a), DEN (b));
        !            42:   mpz_mul (bi, NUM (b), DEN (a));
        !            43:   cc = mpz_cmp (ai, bi);
        !            44:   mpz_clear (ai);
        !            45:   mpz_clear (bi);
        !            46:   return cc;
        !            47: }
        !            48:
        !            49: #ifndef SIZE
        !            50: #define SIZE 8 /* increasing this lowers the probabilty of finding an error */
        !            51: #endif
        !            52:
        !            53: main (argc, argv)
        !            54:      int argc;
        !            55:      char **argv;
        !            56: {
        !            57:   mpq_t a, b;
        !            58:   mp_size_t size;
        !            59:   int reps = 100000;
        !            60:   int i;
        !            61:   int cc, ccref;
        !            62:
        !            63:   if (argc == 2)
        !            64:      reps = atoi (argv[1]);
        !            65:
        !            66:   mpq_init (a);
        !            67:   mpq_init (b);
        !            68:
        !            69:   for (i = 0; i < reps; i++)
        !            70:     {
        !            71:       size = urandom () % SIZE - SIZE/2;
        !            72:       mpz_random2 (NUM (a), size);
        !            73:       do
        !            74:        {
        !            75:          size = urandom () % SIZE - SIZE/2;
        !            76:          mpz_random2 (DEN (a), size);
        !            77:        }
        !            78:       while (mpz_cmp_ui (DEN (a), 0) == 0);
        !            79:
        !            80:       size = urandom () % SIZE - SIZE/2;
        !            81:       mpz_random2 (NUM (b), size);
        !            82:       do
        !            83:        {
        !            84:          size = urandom () % SIZE - SIZE/2;
        !            85:          mpz_random2 (DEN (b), size);
        !            86:        }
        !            87:       while (mpz_cmp_ui (DEN (b), 0) == 0);
        !            88:
        !            89:       mpq_canonicalize (a);
        !            90:       mpq_canonicalize (b);
        !            91:
        !            92:       ccref = ref_mpq_cmp (a, b);
        !            93:       cc = mpq_cmp (a, b);
        !            94:
        !            95:       if (SGN (ccref) != SGN (cc))
        !            96:        abort ();
        !            97:     }
        !            98:
        !            99:   exit (0);
        !           100: }
        !           101:
        !           102: dump (x)
        !           103:      mpq_t x;
        !           104: {
        !           105:   mpz_out_str (stdout, 10, NUM (x));
        !           106:   printf ("/");
        !           107:   mpz_out_str (stdout, 10, DEN (x));
        !           108:   printf ("\n");
        !           109: }