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Annotation of OpenXM_contrib/gmp/tests/mpz/dive_ui.c, Revision 1.1.1.1

1.1       ohara       1: /* Test mpz_divexact_ui.
                      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:
                     30: void
                     31: check_random (int argc, char *argv[])
                     32: {
                     33:   gmp_randstate_ptr rands = RANDS;
                     34:   int    reps = 5000;
                     35:   mpz_t  a, q, got;
                     36:   int    i, qneg;
                     37:   unsigned long  d;
                     38:
                     39:   if (argc == 2)
                     40:     reps = atoi (argv[1]);
                     41:
                     42:   mpz_init (a);
                     43:   mpz_init (q);
                     44:   mpz_init (got);
                     45:
                     46:   for (i = 0; i < reps; i++)
                     47:     {
                     48:       d = (unsigned long) urandom();
                     49:       mpz_erandomb (q, rands, 512);
                     50:       mpz_mul_ui (a, q, d);
                     51:
                     52:       for (qneg = 0; qneg <= 1; qneg++)
                     53:         {
                     54:           mpz_divexact_ui (got, a, d);
                     55:           MPZ_CHECK_FORMAT (got);
                     56:           if (mpz_cmp (got, q) != 0)
                     57:             {
                     58:               printf    ("mpz_divexact_ui wrong\n");
                     59:               mpz_trace ("    a", a);
                     60:               printf    ("    d=%lu\n", d);
                     61:               mpz_trace ("    q", q);
                     62:               mpz_trace ("  got", got);
                     63:               abort ();
                     64:             }
                     65:
                     66:           mpz_neg (q, q);
                     67:           mpz_neg (a, a);
                     68:         }
                     69:
                     70:     }
                     71:
                     72:   mpz_clear (a);
                     73:   mpz_clear (q);
                     74:   mpz_clear (got);
                     75: }
                     76:
                     77:
                     78: int
                     79: main (int argc, char **argv)
                     80: {
                     81:   tests_start ();
                     82:
                     83:   check_random (argc, argv);
                     84:
                     85:   tests_end ();
                     86:   exit (0);
                     87: }