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

1.1     ! maekawa     1: /* Test mpq_cmp_ui.
        !             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 "gmp.h"
        !            23: #include "gmp-impl.h"
        !            24: #include "urandom.h"
        !            25:
        !            26: #define NUM(x) (&((x)->_mp_num))
        !            27: #define DEN(x) (&((x)->_mp_den))
        !            28:
        !            29: #define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
        !            30:
        !            31: ref_mpq_cmp_ui (a, bn, bd)
        !            32:      mpq_t a;
        !            33:      unsigned long int bn, bd;
        !            34: {
        !            35:   mpz_t ai, bi;
        !            36:   int cc;
        !            37:
        !            38:   mpz_init (ai);
        !            39:   mpz_init (bi);
        !            40:
        !            41:   mpz_mul_ui (ai, NUM (a), bd);
        !            42:   mpz_mul_ui (bi, DEN (a), bn);
        !            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:   unsigned long int bn, bd;
        !            63:
        !            64:   if (argc == 2)
        !            65:      reps = atoi (argv[1]);
        !            66:
        !            67:   mpq_init (a);
        !            68:   mpq_init (b);
        !            69:
        !            70:   for (i = 0; i < reps; i++)
        !            71:     {
        !            72:       size = urandom () % SIZE - SIZE/2;
        !            73:       mpz_random2 (NUM (a), size);
        !            74:       do
        !            75:        {
        !            76:          size = urandom () % SIZE - SIZE/2;
        !            77:          mpz_random2 (DEN (a), size);
        !            78:        }
        !            79:       while (mpz_cmp_ui (DEN (a), 0) == 0);
        !            80:
        !            81:       mpz_random2 (NUM (b), 1);
        !            82:       do
        !            83:        {
        !            84:          mpz_random2 (DEN (b), 1);
        !            85:        }
        !            86:       while (mpz_cmp_ui (DEN (b), 0) == 0);
        !            87:
        !            88:       mpq_canonicalize (a);
        !            89:       mpq_canonicalize (b);
        !            90:
        !            91:       bn = mpz_get_ui (NUM (b));
        !            92:       bd = mpz_get_ui (DEN (b));
        !            93:
        !            94:       ccref = ref_mpq_cmp_ui (a, bn, bd);
        !            95:       cc = mpq_cmp_ui (a, bn, bd);
        !            96:
        !            97:       if (SGN (ccref) != SGN (cc))
        !            98:        abort ();
        !            99:     }
        !           100:
        !           101:   exit (0);
        !           102: }