Return to t-sqrtrem.c CVS log

Up to [local] / OpenXM_contrib / gmp / tests / mpz

Annotation of OpenXM_contrib/gmp/tests/mpz/t-sqrtrem.c, Revision 1.1

1.1     ! ohara       1: /* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
        !             2:
        !             3: Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2002 Free Software Foundation,
        !             4: Inc.
        !             5:
        !             6: This file is part of the GNU MP Library.
        !             7:
        !             8: The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU Lesser General Public License as published by
        !            10: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            11: option) any later version.
        !            12:
        !            13: The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            16: License for more details.
        !            17:
        !            18: You should have received a copy of the GNU Lesser General Public License
        !            19: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: MA 02111-1307, USA. */
        !            22:
        !            23: #include <stdio.h>
        !            24: #include <stdlib.h>
        !            25:
        !            26: #include "gmp.h"
        !            27: #include "gmp-impl.h"
        !            28: #include "tests.h"
        !            29:
        !            30: void dump_abort _PROTO ((mpz_t, mpz_t, mpz_t));
        !            31: void debug_mp _PROTO ((mpz_t, int));
        !            32:
        !            33: int
        !            34: main (int argc, char **argv)
        !            35: {
        !            36:   mpz_t x2;
        !            37:   mpz_t x, rem;
        !            38:   mpz_t temp, temp2;
        !            39:   mp_size_t x2_size;
        !            40:   int i;
        !            41:   int reps = 20000;
        !            42:   gmp_randstate_ptr rands;
        !            43:   mpz_t bs;
        !            44:   unsigned long size_range;
        !            45:
        !            46:   tests_start ();
        !            47:   rands = RANDS;
        !            48:
        !            49:   mpz_init (bs);
        !            50:
        !            51:   if (argc == 2)
        !            52:     reps = atoi (argv[1]);
        !            53:
        !            54:   mpz_init (x2);
        !            55:   mpz_init (x);
        !            56:   mpz_init (rem);
        !            57:   mpz_init (temp);
        !            58:   mpz_init (temp2);
        !            59:
        !            60:   for (i = 0; i < reps; i++)
        !            61:     {
        !            62:       mpz_urandomb (bs, rands, 32);
        !            63:       size_range = mpz_get_ui (bs) % 12 + 2; /* 0..8191 bit operands */
        !            64:
        !            65:       mpz_urandomb (bs, rands, size_range);
        !            66:       x2_size = mpz_get_ui (bs);
        !            67:       mpz_rrandomb (x2, rands, x2_size);
        !            68:
        !            69:       /* printf ("%ld\n", SIZ (x2)); */
        !            70:
        !            71:       mpz_sqrtrem (x, rem, x2);
        !            72:       mpz_mul (temp, x, x);
        !            73:
        !            74:       /* Is square of result > argument?  */
        !            75:       if (mpz_cmp (temp, x2) > 0)
        !            76:        dump_abort (x2, x, rem);
        !            77:
        !            78:       mpz_add_ui (temp2, x, 1);
        !            79:       mpz_mul (temp2, temp2, temp2);
        !            80:
        !            81:       /* Is square of (result + 1) <= argument?  */
        !            82:       if (mpz_cmp (temp2, x2) <= 0)
        !            83:        dump_abort (x2, x, rem);
        !            84:
        !            85:       mpz_add (temp2, temp, rem);
        !            86:
        !            87:       /* Is the remainder wrong?  */
        !            88:       if (mpz_cmp (x2, temp2) != 0)
        !            89:        dump_abort (x2, x, rem);
        !            90:     }
        !            91:
        !            92:   mpz_clear (bs);
        !            93:   mpz_clear (x2);
        !            94:   mpz_clear (x);
        !            95:   mpz_clear (rem);
        !            96:   mpz_clear (temp);
        !            97:   mpz_clear (temp2);
        !            98:
        !            99:   tests_end ();
        !           100:   exit (0);
        !           101: }
        !           102:
        !           103: void
        !           104: dump_abort (mpz_t x2, mpz_t x, mpz_t rem)
        !           105: {
        !           106:   fprintf (stderr, "ERROR\n");
        !           107:   fprintf (stderr, "x2        = "); debug_mp (x2, -16);
        !           108:   fprintf (stderr, "x         = "); debug_mp (x, -16);
        !           109:   fprintf (stderr, "remainder = "); debug_mp (rem, -16);
        !           110:   abort();
        !           111: }
        !           112:
        !           113: void
        !           114: debug_mp (mpz_t x, int base)
        !           115: {
        !           116:   mpz_out_str (stderr, base, x); fputc ('\n', stderr);
        !           117: }