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

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: }