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

1.1       maekawa     1: /* Test mpz_mul, mpz_divexact.
                      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: void debug_mp ();
                     28:
                     29: #ifndef SIZE
                     30: #define SIZE 32
                     31: #endif
                     32:
                     33: main (argc, argv)
                     34:      int argc;
                     35:      char **argv;
                     36: {
                     37:   mpz_t op1, op2;
                     38:   mpz_t prod, quot;
                     39:   mp_size_t size;
                     40:   int i;
                     41:   int reps = 100000;
                     42:
                     43:   if (argc == 2)
                     44:      reps = atoi (argv[1]);
                     45:
                     46:   mpz_init (op1);
                     47:   mpz_init (op2);
                     48:   mpz_init (prod);
                     49:   mpz_init (quot);
                     50:
                     51:   for (i = 0; i < reps; i++)
                     52:     {
                     53:       size = urandom () % SIZE - SIZE/2;
                     54:       mpz_random2 (op1, size);
                     55:
                     56:       do
                     57:        {
                     58:          size = urandom () % SIZE - SIZE/2;
                     59:          mpz_random2 (op2, size);
                     60:        }
                     61:       while (mpz_cmp_ui (op2, 0) == 0);
                     62:
                     63:       mpz_mul (prod, op1, op2);
                     64:
                     65:       mpz_divexact (quot, prod, op2);
                     66:       if (mpz_cmp (quot, op1) != 0)
                     67:        dump_abort (quot, op1);
                     68:     }
                     69:
                     70:   exit (0);
                     71: }
                     72:
                     73: dump_abort (op1, op2)
                     74:      mpz_t op1, op2;
                     75: {
                     76:   fprintf (stderr, "ERROR\n");
                     77:   fprintf (stderr, "ref = "); debug_mp (op1, -16);
                     78:   fprintf (stderr, "wrong = "); debug_mp (op2, -16);
                     79:   abort();
                     80: }
                     81:
                     82: void
                     83: debug_mp (x, base)
                     84:      mpz_t x;
                     85: {
                     86:   mpz_out_str (stderr, base, x); fputc ('\n', stderr);
                     87: }