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