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+/*
+ * Copyright © 2012, 2020 Nick Bowler
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef CDECL_TEST_H_
+#define CDECL_TEST_H_
+
+#include <stddef.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <assert.h>
+
+#ifndef _
+#  define _(x) (x)
+#endif
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+
+struct cdecl_declspec;
+struct option;
+struct cdecl;
+
+struct test_rng;
+
+void *malloc_nofail(size_t size);
+void *realloc_nofail(void *ptr, size_t size);
+void test_print_specifiers(struct cdecl_declspec *spec);
+void test_print_decl(struct cdecl *decl);
+void test_explain_decl(struct cdecl *decl);
+
+bool strict_strtoul(unsigned long *val, const char *str, int base);
+
+void test_print_version(const char *program);
+void test_print_options(const struct option *lopts);
+
+/*
+ * Allocate a new random number generator with the given seed string (which
+ * should normally be a command-line argument).  The string is parsed as an
+ * integer value as if by strtoull with a base of 0.
+ */
+struct test_rng *test_rng_alloc(const char *seed);
+
+/*
+ * Free the random number generator rng.
+ */
+void test_rng_free(struct test_rng *rng);
+
+/*
+ * Return a random value uniformly on the half-open interval [0,1)
+ */
+double test_rng_uniform(struct test_rng *rng);
+
+/*
+ * Return a random integer uniformly on the closed interval [0, limit-1]
+ */
+unsigned test_rng_uniform_int(struct test_rng *rng, unsigned limit);
+
+#endif