con-sdl.h

/* con-sdl.h */

/* graphics*/
typedef unsigned short MWIMAGEBITS;/* bitmap image unit size*/

/* MWIMAGEBITS macros*/
#define MWIMAGE_WORDS(x)	(((x)+15)/16)
#define MWIMAGE_BYTES(x)	(MWIMAGE_WORDS(x)*sizeof(MWIMAGEBITS))
/* size of image in words*/
#define	MWIMAGE_SIZE(width, height)  	\
	((height) * (((width) + MWIMAGE_BITSPERIMAGE - 1) / MWIMAGE_BITSPERIMAGE))
#define	MWIMAGE_BITSPERIMAGE	(sizeof(MWIMAGEBITS) * 8)
#define	MWIMAGE_BITVALUE(n)	((MWIMAGEBITS) (((MWIMAGEBITS) 1) << (n)))
#define	MWIMAGE_FIRSTBIT	(MWIMAGE_BITVALUE(MWIMAGE_BITSPERIMAGE - 1))
#define	MWIMAGE_NEXTBIT(m)	((MWIMAGEBITS) ((m) >> 1))
#define	MWIMAGE_TESTBIT(m)	((m) & MWIMAGE_FIRSTBIT)  /* use with shiftbit*/
#define	MWIMAGE_SHIFTBIT(m)	((MWIMAGEBITS) ((m) << 1))  /* for testbit*/