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

1.1     ! ohara       1: /* Test mpz_gcd, mpz_gcdext, mpz_mul, mpz_tdiv_r, mpz_add, mpz_cmp,
        !             2:    mpz_cmp_ui, mpz_init_set, mpz_set, mpz_clear.
        !             3:
        !             4: Copyright 1991, 1993, 1994, 1996, 1997, 2000, 2001, 2002 Free Software
        !             5: Foundation, Inc.
        !             6:
        !             7: This file is part of the GNU MP Library.
        !             8:
        !             9: The GNU MP Library is free software; you can redistribute it and/or modify
        !            10: it under the terms of the GNU Lesser General Public License as published by
        !            11: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            12: option) any later version.
        !            13:
        !            14: The GNU MP Library is distributed in the hope that it will be useful, but
        !            15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            16: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            17: License for more details.
        !            18:
        !            19: You should have received a copy of the GNU Lesser General Public License
        !            20: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            22: MA 02111-1307, USA. */
        !            23:
        !            24: #include <stdio.h>
        !            25: #include <stdlib.h>
        !            26:
        !            27: #include "gmp.h"
        !            28: #include "gmp-impl.h"
        !            29: #include "tests.h"
        !            30:
        !            31: void dump_abort _PROTO ((int, mpz_t, mpz_t));
        !            32: void debug_mp _PROTO ((mpz_t, int));
        !            33:
        !            34: int
        !            35: main (int argc, char **argv)
        !            36: {
        !            37:   mpz_t op1, op2, x;
        !            38:   mpz_t gcd, gcd2, s, t;
        !            39:   mpz_t temp1, temp2;
        !            40:   mp_size_t op1_size, op2_size, x_size;
        !            41:   int i;
        !            42:   int reps = 2000;
        !            43:   gmp_randstate_ptr rands;
        !            44:   mpz_t bs;
        !            45:   unsigned long bsi, size_range;
        !            46:
        !            47:   tests_start ();
        !            48:   rands = RANDS;
        !            49:
        !            50:   mpz_init (bs);
        !            51:
        !            52:   if (argc == 2)
        !            53:     reps = atoi (argv[1]);
        !            54:
        !            55:   mpz_init (op1);
        !            56:   mpz_init (op2);
        !            57:   mpz_init (x);
        !            58:   mpz_init (gcd);
        !            59:   mpz_init (gcd2);
        !            60:   mpz_init (temp1);
        !            61:   mpz_init (temp2);
        !            62:   mpz_init (s);
        !            63:   mpz_init (t);
        !            64:
        !            65:   for (i = 0; i < reps; i++)
        !            66:     {
        !            67:       mpz_urandomb (bs, rands, 32);
        !            68:       size_range = mpz_get_ui (bs) % 12 + 2; /* 0..8191 bit operands */
        !            69:
        !            70:       mpz_urandomb (bs, rands, size_range);
        !            71:       op1_size = mpz_get_ui (bs);
        !            72:       mpz_rrandomb (op1, rands, op1_size);
        !            73:
        !            74:       mpz_urandomb (bs, rands, size_range);
        !            75:       op2_size = mpz_get_ui (bs);
        !            76:       mpz_rrandomb (op2, rands, op2_size);
        !            77:
        !            78:       mpz_urandomb (bs, rands, size_range);
        !            79:       x_size = mpz_get_ui (bs);
        !            80:       mpz_rrandomb (x, rands, x_size);
        !            81:
        !            82:       mpz_urandomb (bs, rands, 2);
        !            83:       bsi = mpz_get_ui (bs);
        !            84:       if ((bsi & 1) != 0)
        !            85:        mpz_neg (op1, op1);
        !            86:       if ((bsi & 2) != 0)
        !            87:        mpz_neg (op2, op2);
        !            88:
        !            89:       /* printf ("%ld %ld\n", SIZ (op1), SIZ (op2)); */
        !            90:
        !            91:       mpz_mul (op1, op1, x);
        !            92:       mpz_mul (op2, op2, x);
        !            93:
        !            94:       mpz_gcd (gcd, op1, op2);
        !            95:       /* We know GCD will be at least X, since we multiplied both operands
        !            96:         with it.  */
        !            97:       if (mpz_cmp (gcd, x) < 0 && mpz_sgn (op1) != 0 && mpz_sgn (op2) != 0)
        !            98:        dump_abort (i, op1, op2);
        !            99:
        !           100:       if (mpz_fits_ulong_p (op2))
        !           101:        {
        !           102:          mpz_gcd_ui (gcd2, op1, mpz_get_ui (op2));
        !           103:          if (mpz_cmp (gcd, gcd2))
        !           104:            dump_abort (i, op1, op2);
        !           105:        }
        !           106:
        !           107:       mpz_gcdext (gcd2, s, t, op1, op2);
        !           108:       if (mpz_cmp (gcd, gcd2))
        !           109:        dump_abort (i, op1, op2);
        !           110:
        !           111:       mpz_gcdext (gcd2, s, NULL, op1, op2);
        !           112:       if (mpz_cmp (gcd, gcd2))
        !           113:        dump_abort (i, op1, op2);
        !           114:
        !           115:       mpz_mul (temp1, s, op1);
        !           116:       mpz_mul (temp2, t, op2);
        !           117:       mpz_add (gcd2, temp1, temp2);
        !           118:       if (mpz_cmp (gcd, gcd2))
        !           119:        dump_abort (i, op1, op2);
        !           120:     }
        !           121:
        !           122:   mpz_clear (bs);
        !           123:   mpz_clear (op1);
        !           124:   mpz_clear (op2);
        !           125:   mpz_clear (x);
        !           126:   mpz_clear (gcd);
        !           127:   mpz_clear (gcd2);
        !           128:   mpz_clear (temp1);
        !           129:   mpz_clear (temp2);
        !           130:   mpz_clear (s);
        !           131:   mpz_clear (t);
        !           132:
        !           133:   tests_end ();
        !           134:   exit (0);
        !           135: }
        !           136:
        !           137: void
        !           138: dump_abort (int testnr, mpz_t op1, mpz_t op2)
        !           139: {
        !           140:   fprintf (stderr, "ERROR in test %d\n", testnr);
        !           141:   fprintf (stderr, "op1 = "); debug_mp (op1, -16);
        !           142:   fprintf (stderr, "op2 = "); debug_mp (op2, -16);
        !           143:   abort();
        !           144: }
        !           145:
        !           146: void
        !           147: debug_mp (mpz_t x, int base)
        !           148: {
        !           149:   mpz_out_str (stderr, base, x); fputc ('\n', stderr);
        !           150: }