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/* ****************************************************************************
 * assert.h -- Assertions.
 * Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
 *
 * This file is part of the 'all/core' module,
 * in libcarrot, an experimental modular libc project.
 *
 * This file is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * This file 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 Lesser General Lesser Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this file.  If not, see <http://www.gnu.org/licenses/>.
 * ************************************************************************* */
#include <cdefs.h>
#include <stddef.h>

/* Here is the nice way to get the function name. */
#if defined(__cplusplus) ? __GNUC_PREREQ(2, 6) : __GNUC_PREREQ(2, 4)
# define __ASSERT_FUNC __PRETTY_FUNCTION__
#elif __USE_C99
# define __ASSERT_FUNC __func__
#else
# define __ASSERT_FUNC NULL
#endif
/* ************************************************************************* */
/*  Main functions                                                           */
/* ************************************************************************* */
__BEGIN_DECLS

extern void __noreturn __assert_fail _OF((const char *__assertion,
	const char *__file, unsigned int __line, const char *__function)) __THROW;

__END_DECLS
/* ************************************************************************* */
/*  Macro definition                                                         */
/* ************************************************************************* */
#ifdef assert
# undef assert
#endif
#ifdef NDEBUG
# define assert(_IGN) ((void)0)
#else
# define assert(_EXPR) \
	((_EXPR) \
		? (void)0 \
		: __assert_fail(#_EXPR, __FILE__, __LINE__, __ASSERT_FUNC))
#endif