/*
 * OMAP3 ISP library - Tools
 *
 * Copyright (C) 2010-2011 Ideas on board SPRL
 *
 * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 *
 * This library 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 2.1 of the License, or (at
 * your option) any later version.
 *
 * This library 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 Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef __TOOLS_H__
#define __TOOLS_H__

#define ARRAY_SIZE(array)	(sizeof(array) / sizeof((array)[0]))

#define min(a, b) ({				\
	typeof(a) __a = (a);			\
	typeof(b) __b = (b);			\
	__a < __b ? __a : __b;			\
})

#define min_t(type, a, b) ({			\
	type __a = (a);				\
	type __b = (b);				\
	__a < __b ? __a : __b;			\
})

#define max(a, b) ({				\
	typeof(a) __a = (a);			\
	typeof(b) __b = (b);			\
	__a > __b ? __a : __b;			\
})

#define max_t(type, a, b) ({			\
	type __a = (a);				\
	type __b = (b);				\
	__a > __b ? __a : __b;			\
})

#define clamp(val, min, max) ({			\
	typeof(val) __val = (val);		\
	typeof(min) __min = (min);		\
	typeof(max) __max = (max);		\
	__val = __val < __min ? __min : __val;	\
	__val > __max ? __max : __val;		\
})

#define clamp_t(type, val, min, max) ({		\
	type __val = (val);			\
	type __min = (min);			\
	type __max = (max);			\
	__val = __val < __min ? __min : __val;	\
	__val > __max ? __max : __val;		\
})

#define div_round_up(num, denom)	(((num) + (denom) - 1) / (denom))

#define container_of(ptr, type, member) \
	(type *)((char *)(ptr) - offsetof(type, member))

#endif /* __TOOLS_H__ */