Лабы / Roma / TYPES

#if !defined ( __TYPES__ )
	#define __TYPES__

	#include <math.h>
	#include <graphics.h>


	#if !defined ( NULL )
		#define NULL	0L
	#endif

	/*	Truth and
		falsehood.	*/

	#define FALSE	0
	#define TRUE	!FALSE

	/*	Real is a
		double.	*/

	typedef float REAL;

	/*	Boolean type
		for true\false.	*/

	typedef int BOOL;

	/*	Pixel type
		is a char.	*/

	typedef unsigned char PIXEL;

	/*	An integer
		point.	*/

	typedef struct {

		int x, y;
	} INTPOINT;

	/*	Some usefull
		macros.	*/

	#define ABS(a)		(((a)<0)?-(a):(a))
	#define SGN(a)		(((a)<0)?-1:(a)>0?1:0)
	#define SWAP(a,b)	a^=b;b^=a;a^=b;
	#define CLAMP(a)	((a-floor(a)>0.5)?ceil(a):floor(a))
	#define MAX(a,b) 	(((a)>(b))?(a):(b))
	#define MIN(a,b) 	(((a)<(b))?(a):(b))
	#define RADIAN(x)	((22.0/7.0/180.0)*x)
	#define DEGREE(x)	((acos ((x)))*180.0)

	/*	Some macros for doing fixed point
		( Abrash's scan convertors use these ).	*/

	#define INT_TO_FIXED(a)			(long)(((long)(a))<<16)
	#define ROUND_FIXED_TO_INT(FixedVal)	((int)((FixedVal+0x8000)>>16))
#endif