1 /* Test mpz_powm_ui, mpz_mul. mpz_mod, mpz_mod_ui, mpz_div_ui.
3 Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
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.
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.
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. */
39 mp_size_t base_size, mod_size;
45 reps = atoi (argv[1]);
53 for (i = 0; i < reps; i++)
55 base_size = urandom () % SIZE /* - SIZE/2 */;
56 mpz_random2 (base, base_size);
58 mpn_random2 (&exp, 1);
60 mod_size = urandom () % SIZE /* - SIZE/2 */;
61 mpz_random2 (mod, mod_size);
62 if (mpz_cmp_ui (mod, 0) == 0)
65 /* This is mathematically undefined. */
66 if (mpz_cmp_ui (base, 0) == 0 && exp == 0)
75 mpz_powm_ui (r1, base, (unsigned long int) exp, mod);
78 mpz_set (base2, base);
81 mpz_mod (r2, r2, mod); /* needed when exp==0 and mod==1 */
86 mpz_mul (r2, r2, base2);
87 mpz_mod (r2, r2, mod);
89 mpz_mul (base2, base2, base2);
90 mpz_mod (base2, base2, mod);
99 if (mpz_cmp (r1, r2) != 0)
106 dump_abort (dividend, divisor)
107 MP_INT *dividend, *divisor;
109 fprintf (stderr, "ERROR\n");
110 fprintf (stderr, "dividend = "); debug_mp (dividend, -16);
111 fprintf (stderr, "divisor = "); debug_mp (divisor, -16);
119 mpz_out_str (stderr, base, x); fputc ('\n', stderr);