From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/tests/mpz/t-powm_ui.c | 127 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 gmp-6.3.0/tests/mpz/t-powm_ui.c (limited to 'gmp-6.3.0/tests/mpz/t-powm_ui.c') diff --git a/gmp-6.3.0/tests/mpz/t-powm_ui.c b/gmp-6.3.0/tests/mpz/t-powm_ui.c new file mode 100644 index 0000000..5b446c5 --- /dev/null +++ b/gmp-6.3.0/tests/mpz/t-powm_ui.c @@ -0,0 +1,127 @@ +/* Test mpz_powm_ui, mpz_mul, mpz_mod. + +Copyright 1991, 1993, 1994, 1996, 1997, 2000-2002, 2013 Free Software +Foundation, Inc. + +This file is part of the GNU MP Library test suite. + +The GNU MP Library test suite 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 3 of the License, +or (at your option) any later version. + +The GNU MP Library test suite 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 test suite. If not, see https://www.gnu.org/licenses/. */ + +#include +#include + +#include "gmp-impl.h" +#include "tests.h" + +int +main (int argc, char **argv) +{ + mpz_t base, exp, mod; + mpz_t r1, r2, base2; + mp_size_t base_size, exp_size, mod_size; + unsigned long int exp2; + int i; + int reps = 100; + gmp_randstate_ptr rands; + mpz_t bs; + unsigned long bsi, size_range; + + tests_start (); + rands = RANDS; + + TESTS_REPS (reps, argv, argc); + + mpz_inits (bs, base, exp, mod, r1, r2, base2, NULL); + + for (i = 0; i < reps; i++) + { + mpz_urandomb (bs, rands, 32); + size_range = mpz_get_ui (bs) % 18 + 2; + + do /* Loop until mathematically well-defined. */ + { + mpz_urandomb (bs, rands, size_range); + base_size = mpz_get_ui (bs); + mpz_rrandomb (base, rands, base_size); + + mpz_urandomb (bs, rands, 6L); + exp_size = mpz_get_ui (bs); + mpz_rrandomb (exp, rands, exp_size); + exp2 = mpz_getlimbn (exp, (mp_size_t) 0); + } + while (mpz_cmp_ui (base, 0) == 0 && exp2 == 0); + + do + { + mpz_urandomb (bs, rands, size_range); + mod_size = mpz_get_ui (bs); + mpz_rrandomb (mod, rands, mod_size); + } + while (mpz_cmp_ui (mod, 0) == 0); + + mpz_urandomb (bs, rands, 2); + bsi = mpz_get_ui (bs); + if ((bsi & 1) != 0) + mpz_neg (base, base); + + /* printf ("%ld %ld\n", SIZ (base), SIZ (mod)); */ + +#if 0 + putc ('\n', stderr); + gmp_fprintf (stderr, "B = 0x%Zx\n", base); + gmp_fprintf (stderr, "M = 0x%Zx\n", mod); +#endif + + exp2 = mpz_getlimbn (exp, (mp_size_t) 0); + mpz_set_ui (r2, 1); + mpz_set (base2, base); + mpz_mod (r2, r2, mod); /* needed when exp==0 and mod==1 */ + while (exp2 != 0) + { + if (exp2 % 2 != 0) + { + mpz_mul (r2, r2, base2); + mpz_mod (r2, r2, mod); + } + mpz_mul (base2, base2, base2); + mpz_mod (base2, base2, mod); + exp2 = exp2 / 2; + } + + exp2 = mpz_getlimbn (exp, (mp_size_t) 0); + mpz_powm_ui (r1, base, exp2, mod); + MPZ_CHECK_FORMAT (r1); + +#if 0 + gmp_fprintf (stderr, "R = 0x%Zx\n", r1); + gmp_fprintf (stderr, "REF = 0x%Zx\n", r2); +#endif + + if (mpz_cmp (r1, r2) != 0) + { + fprintf (stderr, "\ntest %d: Incorrect results for operands:\n", i); + gmp_fprintf (stderr, "B = 0x%Zx\n", base); + gmp_fprintf (stderr, "E = 0x%Zx\n", exp); + gmp_fprintf (stderr, "M = 0x%Zx\n", mod); + gmp_fprintf (stderr, "R = 0x%Zx\n", r1); + gmp_fprintf (stderr, "REF = 0x%Zx\n", r2); + abort (); + } + } + + mpz_clears (bs, base, exp, mod, r1, r2, base2, NULL); + + tests_end (); + exit (0); +} -- cgit v1.2.3