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

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: }