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- /* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
-
- Copyright (C) 1991, 1993 Free Software Foundation, Inc.
-
- This file is part of the GNU MP Library.
-
- The GNU MP Library is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- The GNU MP Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with the GNU MP Library; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <stdio.h>
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "urandom.h"
-
- void debug_mp ();
-
- #ifndef SIZE
- #define SIZE 8
- #endif
-
- main (argc, argv)
- int argc;
- char **argv;
- {
- MP_INT x2;
- MP_INT x, rem;
- MP_INT temp, temp2;
- mp_size x2_size;
- int i;
- int reps = 100000;
-
- if (argc == 2)
- reps = atoi (argv[1]);
-
- mpz_init (&x2);
- mpz_init (&x);
- mpz_init (&rem);
- mpz_init (&temp);
- mpz_init (&temp2);
-
- for (i = 0; i < reps; i++)
- {
- x2_size = urandom () % SIZE;
-
- mpz_random2 (&x2, x2_size);
-
- mpz_sqrtrem (&x, &rem, &x2);
- mpz_mul (&temp, &x, &x);
-
- /* Is square of result > argument? */
- if (mpz_cmp (&temp, &x2) > 0)
- dump_abort (&x2, &x, &rem);
-
- mpz_add_ui (&temp2, &x, 1);
- mpz_mul (&temp2, &temp2, &temp2);
-
- /* Is square of (result + 1) <= argument? */
- if (mpz_cmp (&temp2, &x2) <= 0)
- dump_abort (&x2, &x, &rem);
-
- mpz_add (&temp2, &temp, &rem);
-
- /* Is the remainder wrong? */
- if (mpz_cmp (&x2, &temp2) != 0)
- dump_abort (&x2, &x, &rem);
- }
-
- exit (0);
- }
-
- dump_abort (x2, x, rem)
- MP_INT *x2, *x, *rem;
- {
- fprintf (stderr, "ERROR\n");
- fprintf (stderr, "x2 = "); debug_mp (x2, -16);
- fprintf (stderr, "x = "); debug_mp (x, -16);
- fprintf (stderr, "remainder = "); debug_mp (rem, -16);
- abort();
- }
-
- void
- debug_mp (x, base)
- MP_INT *x;
- {
- mpz_out_str (stderr, base, x); fputc ('\n', stderr);
- }
-