/*
 * util.h
 *
 *  Created on: Feb 26, 2023
 *  Author: Daniel Peter Chokola
 */

#ifndef UTIL_H_
#define UTIL_H_

/* Definitions */
#ifdef __GNUC__
#  define UNUSED __attribute__((unused))
#else
#  define UNUSED
#endif
#define return_if_fail(cond) \
	if(!(cond)) { return; }
#define return_val_if_fail(cond, val) \
	if(!(cond)) { return (val); }
#define return_null_if_fail(cond) return_val_if_fail((cond), NULL)
/* MIN() and MAX() */
#ifdef __GNUC__
#	if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9))
/* prevent double evaluation */
#		define MIN(a,b)	\
	__extension__({ __auto_type _a = (a); \
	                __auto_type _b = (b); \
	                _a < _b ? _a : _b; })
#		define MAX(a,b)	\
	__extension__({ __auto_type _a = (a); \
	                __auto_type _b = (b); \
	                _a > _b ? _a : _b; })
#	else
/* typesafety but double evaluation is possible */
#		define MIN(a,b)		\
	__extension__({ __typeof__ (a) _a = (a); \
	                __typeof__ (b) _b = (b); \
	                _a < _b ? _a : _b; })
#		define MAX(a,b)		\
	__extension__({ __typeof__ (a) _a = (a); \
	                __typeof__ (b) _b = (b); \
	                _a > _b ? _a : _b; })
#	endif
#else
/* no typesafety and double evaluation is possible */
#	define MIN(a,b) ((a) < (b) ? (a) : (b))
#	define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif

#endif /* UTIL_H_ */