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

1.1       maekawa     1: /* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
                      2:
                      3: Copyright (C) 1991, 1993, 1994, 1996 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 Library General Public License as published by
                      9: the Free Software Foundation; either version 2 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 Library General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Library 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 "gmp.h"
                     24: #include "gmp-impl.h"
                     25: #include "urandom.h"
                     26:
                     27: void debug_mp ();
                     28:
                     29: #ifndef SIZE
                     30: #define SIZE 16
                     31: #endif
                     32:
                     33: main (argc, argv)
                     34:      int argc;
                     35:      char **argv;
                     36: {
                     37:   mpz_t x2;
                     38:   mpz_t x, rem;
                     39:   mpz_t temp, temp2;
                     40:   mp_size_t x2_size;
                     41:   int i;
                     42:   int reps = 100000;
                     43:
                     44:   if (argc == 2)
                     45:      reps = atoi (argv[1]);
                     46:
                     47:   mpz_init (x2);
                     48:   mpz_init (x);
                     49:   mpz_init (rem);
                     50:   mpz_init (temp);
                     51:   mpz_init (temp2);
                     52:
                     53:   for (i = 0; i < reps; i++)
                     54:     {
                     55:       x2_size = urandom () % SIZE;
                     56:
                     57:       mpz_random2 (x2, x2_size);
                     58:
                     59:       mpz_sqrtrem (x, rem, x2);
                     60:       mpz_mul (temp, x, x);
                     61:
                     62:       /* Is square of result > argument?  */
                     63:       if (mpz_cmp (temp, x2) > 0)
                     64:        dump_abort (x2, x, rem);
                     65:
                     66:       mpz_add_ui (temp2, x, 1);
                     67:       mpz_mul (temp2, temp2, temp2);
                     68:
                     69:       /* Is square of (result + 1) <= argument?  */
                     70:       if (mpz_cmp (temp2, x2) <= 0)
                     71:        dump_abort (x2, x, rem);
                     72:
                     73:       mpz_add (temp2, temp, rem);
                     74:
                     75:       /* Is the remainder wrong?  */
                     76:       if (mpz_cmp (x2, temp2) != 0)
                     77:        dump_abort (x2, x, rem);
                     78:     }
                     79:
                     80:   exit (0);
                     81: }
                     82:
                     83: dump_abort (x2, x, rem)
                     84:      mpz_t x2, x, rem;
                     85: {
                     86:   fprintf (stderr, "ERROR\n");
                     87:   fprintf (stderr, "x2        = "); debug_mp (x2, -16);
                     88:   fprintf (stderr, "x         = "); debug_mp (x, -16);
                     89:   fprintf (stderr, "remainder = "); debug_mp (rem, -16);
                     90:   abort();
                     91: }
                     92:
                     93: void
                     94: debug_mp (x, base)
                     95:      mpz_t x;
                     96: {
                     97:   mpz_out_str (stderr, base, x); fputc ('\n', stderr);
                     98: }