#include <math.h>	/* for rint() -- which isn't in Ulrix 2.2 <math.h> */
extern double	 rint();

#define UNALLOCATED	(DEVICE_COLOR_TABLE_SIZE) /* an impossible index */
#define UNDEFINED_GDCT_COLOR	(-1.0)	/* an impossible red color value */

/* The following specifies the structure of the color table generated by
 * xws_rgbmap.  The 5, 5, 5 _MAX values produce an XA_RGB_DEFAULT_MAP-type
 * color map.  For an XA_RGB_BEST_MAP-type color map, specify 7, 7, 3.
 */
#define RED_MAX		5
#define GREEN_MAX	5
#define BLUE_MAX	5

#define X_RGB_SCALE	65535   /* X maximum red, green, or blue color value */
#define CONTIGUOUS	1	/* for XAllocColorCell() */
#define NONCONTIGUOUS	0	/* for XAllocColorCell() */