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Annotation of OpenXM_contrib/gmp/tests/mpz/dive.c, Revision 1.1

1.1     ! ohara       1: /* Test mpz_mul, mpz_divexact.
        !             2:
        !             3: Copyright 1996, 2001, 2002 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: int
        !            30: main (int argc, char **argv)
        !            31: {
        !            32:   mpz_t op1, op2;
        !            33:   mpz_t prod, quot;
        !            34:   mp_size_t size;
        !            35:   int i;
        !            36:   int reps = 20000;
        !            37:   gmp_randstate_ptr rands;
        !            38:   mpz_t bs;
        !            39:   unsigned long bsi, size_range;
        !            40:
        !            41:   tests_start ();
        !            42:   rands = RANDS;
        !            43:
        !            44:   mp_trace_base = -16;
        !            45:
        !            46:   mpz_init (bs);
        !            47:
        !            48:   if (argc == 2)
        !            49:      reps = atoi (argv[1]);
        !            50:
        !            51:   mpz_init (op1);
        !            52:   mpz_init (op2);
        !            53:   mpz_init (prod);
        !            54:   mpz_init (quot);
        !            55:
        !            56:   for (i = 0; i < reps; i++)
        !            57:     {
        !            58:       mpz_urandomb (bs, rands, 32);
        !            59:       size_range = mpz_get_ui (bs) % 10 + 2; /* 0..2047 bit operands */
        !            60:
        !            61:       mpz_urandomb (bs, rands, size_range);
        !            62:       size = mpz_get_ui (bs);
        !            63:       mpz_rrandomb (op1, rands, size);
        !            64:
        !            65:       do
        !            66:        {
        !            67:          mpz_urandomb (bs, rands, size_range);
        !            68:          size = mpz_get_ui (bs);
        !            69:          mpz_rrandomb (op2, rands, size);
        !            70:        }
        !            71:       while (mpz_sgn (op2) == 0);
        !            72:
        !            73:       mpz_urandomb (bs, rands, 2);
        !            74:       bsi = mpz_get_ui (bs);
        !            75:       if ((bsi & 1) != 0)
        !            76:        mpz_neg (op1, op1);
        !            77:       if ((bsi & 2) != 0)
        !            78:        mpz_neg (op2, op2);
        !            79:
        !            80:       mpz_mul (prod, op1, op2);
        !            81:
        !            82:       mpz_divexact (quot, prod, op2);
        !            83:       MPZ_CHECK_FORMAT (quot);
        !            84:
        !            85:       if (mpz_cmp (quot, op1) != 0)
        !            86:         {
        !            87:           printf ("Wrong results:\n");
        !            88:           mpz_trace ("  got     ", quot);
        !            89:           mpz_trace ("  want    ", op1);
        !            90:           mpz_trace ("  dividend", prod);
        !            91:           mpz_trace ("  divisor ", op2);
        !            92:           abort ();
        !            93:         }
        !            94:     }
        !            95:
        !            96:   mpz_clear (bs);
        !            97:   mpz_clear (op1);
        !            98:   mpz_clear (op2);
        !            99:   mpz_clear (prod);
        !           100:   mpz_clear (quot);
        !           101:
        !           102:   tests_end ();
        !           103:   exit (0);
        !           104: }