mirror of https://github.com/macssh/macssh.git
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
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/* Test mpz_pow_ui and mpz_ui_pow_ui.
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Copyright (C) 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include <stdio.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "urandom.h"
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void debug_mp ();
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void ref_mpz_pow_ui ();
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main (argc, argv)
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int argc;
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char **argv;
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{
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mpz_t base;
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mpz_t result, ref_result;
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mp_size_t base_size;
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unsigned long int exp;
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int i;
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int reps = 50000;
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if (argc == 2)
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reps = atoi (argv[1]);
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mpz_init (base);
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mpz_init (result);
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mpz_init (ref_result);
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for (i = 0; i < reps; i++)
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{
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base_size = urandom () % 8 - 4;
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exp = urandom () % 16;
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mpz_random2 (base, base_size);
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ref_mpz_pow_ui (ref_result, base, exp);
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mpz_pow_ui (result, base, exp);
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if (mpz_cmp (result, ref_result))
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{
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fprintf (stderr, "ERROR (mpz_pow_ui):\n");
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debug_mp (" base = ", base, -16);
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fprintf (stderr, " exp = %lu (0x%lX)\n", exp, exp);
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debug_mp (" result = ", result, -16);
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debug_mp ("ref_result = ", ref_result, -16);
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abort ();
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}
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if (mpz_cmp_ui (base, 0L) >= 0
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&& mpz_cmp_ui (base, ~(unsigned long int) 0) <= 0)
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{
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mpz_ui_pow_ui (result, mpz_get_ui (base), exp);
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if (mpz_cmp (result, ref_result))
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{
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fprintf (stderr, "ERROR (mpz_ui_pow_ui):\n");
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debug_mp (" base = ", base, -16);
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fprintf (stderr, " exp = %lu (0x%lX)\n", exp, exp);
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debug_mp (" result = ", result, -16);
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debug_mp ("ref_result = ", ref_result, -16);
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abort ();
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}
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}
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}
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exit (0);
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}
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void
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ref_mpz_pow_ui (w, u, e)
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mpz_t w;
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const mpz_t u;
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unsigned long int e;
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{
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mpz_t s, t;
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unsigned long int i;
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mpz_init_set_ui (t, 1);
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mpz_init_set (s, u);
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if ((e & 1) != 0)
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mpz_mul (t, t, s);
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for (i = 2; i <= e; i <<= 1)
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{
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mpz_mul (s, s, s);
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if ((i & e) != 0)
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mpz_mul (t, t, s);
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}
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mpz_set (w, t);
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mpz_clear (s);
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mpz_clear (t);
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}
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void
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debug_mp (str, x, base)
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char *str;
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mpz_t x;
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int base;
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{
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fprintf (stderr, "%s", str);
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mpz_out_str (stderr, base, x); fputc ('\n', stderr);
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}
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