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Annotation of OpenXM_contrib/gmp/tests/mpz/t-fac_ui.c, Revision 1.1.1.1

1.1       ohara       1: /* Exercise mpz_fac_ui.
                      2:
                      3: Copyright 2000, 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: #include "gmp.h"
                     25: #include "gmp-impl.h"
                     26: #include "tests.h"
                     27:
                     28:
                     29: /* Usage: t-fac_ui [x|num]
                     30:
                     31:    With no arguments testing goes up to the initial value of "limit" below.
                     32:    With a number argument tests are carried that far, or with a literal "x"
                     33:    tests are continued without limit (this being meant only for development
                     34:    purposes).  */
                     35:
                     36:
                     37: int
                     38: main (int argc, char *argv[])
                     39: {
                     40:   unsigned long  n;
                     41:   unsigned long  limit = 1500;
                     42:   mpz_t          f, r;
                     43:
                     44:   tests_start ();
                     45:
                     46:   if (argc > 1 && argv[1][0] == 'x')
                     47:     limit = ULONG_MAX;
                     48:   else if (argc > 1)
                     49:     limit = atoi (argv[1]);
                     50:
                     51:   /* for small limb testing */
                     52:   limit = MIN (limit, MP_LIMB_T_MAX);
                     53:
                     54:   mpz_init_set_ui (f, 1);  /* 0! = 1 */
                     55:   mpz_init (r);
                     56:
                     57:   for (n = 0; n < limit; n++)
                     58:     {
                     59:       mpz_fac_ui (r, n);
                     60:       MPZ_CHECK_FORMAT (r);
                     61:
                     62:       if (mpz_cmp (f, r) != 0)
                     63:         {
                     64:           printf ("mpz_fib_ui(%lu) wrong\n", n);
                     65:           printf ("  got  "); mpz_out_str (stdout, 10, r); printf("\n");
                     66:           printf ("  want "); mpz_out_str (stdout, 10, f); printf("\n");
                     67:           abort ();
                     68:         }
                     69:
                     70:       mpz_mul_ui (f, f, n+1);  /* (n+1)! = n! * n */
                     71:     }
                     72:
                     73:   mpz_clear (f);
                     74:   mpz_clear (r);
                     75:
                     76:   tests_end ();
                     77:
                     78:   exit (0);
                     79: }