diff options
Diffstat (limited to 'contrib/libgmp/mpz/tests/t-sqrtrem.c')
-rw-r--r-- | contrib/libgmp/mpz/tests/t-sqrtrem.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/contrib/libgmp/mpz/tests/t-sqrtrem.c b/contrib/libgmp/mpz/tests/t-sqrtrem.c new file mode 100644 index 0000000..f5fcd09 --- /dev/null +++ b/contrib/libgmp/mpz/tests/t-sqrtrem.c @@ -0,0 +1,98 @@ +/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem. + +Copyright (C) 1991, 1993, 1994, 1996 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 Library General Public License as published by +the Free Software Foundation; either version 2 of the License, 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 Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include <stdio.h> +#include "gmp.h" +#include "gmp-impl.h" +#include "urandom.h" + +void debug_mp (); + +#ifndef SIZE +#define SIZE 16 +#endif + +main (argc, argv) + int argc; + char **argv; +{ + mpz_t x2; + mpz_t x, rem; + mpz_t temp, temp2; + mp_size_t 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) + mpz_t 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) + mpz_t x; +{ + mpz_out_str (stderr, base, x); fputc ('\n', stderr); +} |