2 * Copyright © 2012, 2020, 2022-2023 Nick Bowler
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
30 #define MIN(a, b) ((a) < (b) ? (a) : (b))
32 struct cdecl_declspec;
38 void *malloc_nofail(size_t size);
39 void *realloc_nofail(void *ptr, size_t size);
40 void test_print_specifiers(struct cdecl_declspec *spec);
41 void test_print_decl(struct cdecl *decl);
42 void test_explain_decl(struct cdecl *decl);
44 bool strict_strtoul(unsigned long *val, const char *str, int base);
46 void test_print_version(const char *program);
47 void test_print_options(const struct option *lopts);
50 * Allocate a new random number generator with the given seed string (which
51 * should normally be a command-line argument). The string is parsed as an
52 * integer value as if by strtoull with a base of 0.
54 struct test_rng *test_rng_alloc(const char *seed);
57 * Free the random number generator rng.
59 void test_rng_free(struct test_rng *rng);
62 * Return a random integer uniformly on the closed interval [0, limit-1]
64 unsigned test_rng_uniform_int(struct test_rng *rng, unsigned limit);
67 * Return false or true with 50% probablility either way.
69 static inline int test_rng_50_50(struct test_rng *rng)
71 return test_rng_uniform_int(rng, 2) == 0;