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/mini-gmp/tests/t-cong.c | 212 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 gmp-6.3.0/mini-gmp/tests/t-cong.c (limited to 'gmp-6.3.0/mini-gmp/tests/t-cong.c') diff --git a/gmp-6.3.0/mini-gmp/tests/t-cong.c b/gmp-6.3.0/mini-gmp/tests/t-cong.c new file mode 100644 index 0000000..92b6930 --- /dev/null +++ b/gmp-6.3.0/mini-gmp/tests/t-cong.c @@ -0,0 +1,212 @@ +/* test mpz_congruent_p + +Copyright 2001, 2002, 2012, 2014 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 "testutils.h" + +#define MPZ_SRCPTR_SWAP(x, y) \ + do { \ + mpz_srcptr __mpz_srcptr_swap__tmp = (x); \ + (x) = (y); \ + (y) = __mpz_srcptr_swap__tmp; \ + } while (0) + +void +check_one (mpz_srcptr a, mpz_srcptr c, mpz_srcptr d, int want) +{ + int got; + int swap; + + for (swap = 0; swap <= 1; swap++) + { + got = (mpz_congruent_p (a, c, d) != 0); + if (want != got) + { + printf ("mpz_congruent_p wrong\n"); + printf (" expected %d got %d\n", want, got); + dump (" a", a); + dump (" c", c); + dump (" d", d); + abort (); + } + +#if 0 + if (mpz_fits_ulong_p (c) && mpz_fits_ulong_p (d)) + { + unsigned long uc = mpz_get_ui (c); + unsigned long ud = mpz_get_ui (d); + got = (mpz_congruent_ui_p (a, uc, ud) != 0); + if (want != got) + { + printf ("mpz_congruent_ui_p wrong\n"); + printf (" expected %d got %d\n", want, got); + dump (" a", a); + printf (" c=%lu\n", uc); + printf (" d=%lu\n", ud); + abort (); + } + } +#endif + MPZ_SRCPTR_SWAP (a, c); + } +} + + +void +check_data (void) +{ + static const struct { + const char *a; + const char *c; + const char *d; + int want; + + } data[] = { + + /* strict equality mod 0 */ + { "0", "0", "0", 1 }, + { "11", "11", "0", 1 }, + { "3", "11", "0", 0 }, + + /* anything congruent mod 1 */ + { "0", "0", "1", 1 }, + { "1", "0", "1", 1 }, + { "0", "1", "1", 1 }, + { "123", "456", "1", 1 }, + { "0x123456789123456789", "0x987654321987654321", "1", 1 }, + + /* csize==1, dsize==2 changing to 1 after stripping 2s */ + { "0x3333333333333333", "0x33333333", + "0x180000000", 1 }, + { "0x33333333333333333333333333333333", "0x3333333333333333", + "0x18000000000000000", 1 }, + + /* another dsize==2 becoming 1, with opposite signs this time */ + { "0x444444441", + "-0x22222221F", + "0x333333330", 1 }, + { "0x44444444444444441", + "-0x2222222222222221F", + "0x33333333333333330", 1 }, + }; + + mpz_t a, c, d; + unsigned i; + + mpz_init (a); + mpz_init (c); + mpz_init (d); + + for (i = 0; i < numberof (data); i++) + { + mpz_set_str_or_abort (a, data[i].a, 0); + mpz_set_str_or_abort (c, data[i].c, 0); + mpz_set_str_or_abort (d, data[i].d, 0); + check_one (a, c, d, data[i].want); + } + + mpz_clear (a); + mpz_clear (c); + mpz_clear (d); +} + + +void +check_random (int argc, char *argv[]) +{ + mpz_t a, c, d, ra, rc; + int i; + int want; + int reps = 10000; + mpz_t bs; + unsigned long size_range, size; + + if (argc >= 2) + reps = atoi (argv[1]); + + mpz_init (bs); + + mpz_init (a); + mpz_init (c); + mpz_init (d); + mpz_init (ra); + mpz_init (rc); + + for (i = 0; i < reps; i++) + { + mini_urandomb (bs, 32); + size_range = mpz_get_ui (bs) % 13 + 1; /* 0..8192 bit operands */ + + mini_urandomb (bs, size_range); + size = mpz_get_ui (bs); + mini_rrandomb (a, size); + + mini_urandomb (bs, 32); + size_range = mpz_get_ui (bs) % 13 + 1; /* 0..8192 bit operands */ + + mini_urandomb (bs, size_range); + size = mpz_get_ui (bs); + mini_rrandomb (c, size); + + do + { + mini_urandomb (bs, 32); + size_range = mpz_get_ui (bs) % 13 + 1; /* 0..8192 bit operands */ + + mini_urandomb (bs, size_range); + size = mpz_get_ui (bs); + mini_rrandomb (d, size); + } + while (mpz_sgn(d) == 0); + + mini_urandomb (bs, 3); + if (mpz_tstbit (bs, 0)) + mpz_neg (a, a); + if (mpz_tstbit (bs, 1)) + mpz_neg (c, c); + if (mpz_tstbit (bs, 2)) + mpz_neg (d, d); + + mpz_fdiv_r (ra, a, d); + mpz_fdiv_r (rc, c, d); + + want = (mpz_cmp (ra, rc) == 0); + check_one (a, c, d, want); + + mpz_sub (ra, ra, rc); + mpz_sub (a, a, ra); + check_one (a, c, d, 1); + + } + + mpz_clear (bs); + + mpz_clear (a); + mpz_clear (c); + mpz_clear (d); + mpz_clear (ra); + mpz_clear (rc); +} + + +void +testmain (int argc, char *argv[]) +{ + check_data (); + check_random (argc, argv); +} -- cgit v1.2.3