--- ray/src/common/color.h	2003/06/30 14:59:10	2.23
+++ ray/src/common/color.h	2006/09/05 21:54:32	2.29
@@ -1,4 +1,4 @@
-/* RCSid $Id: color.h,v 2.23 2003/06/30 14:59:10 schorsch Exp $ */
+/* RCSid $Id: color.h,v 2.29 2006/09/05 21:54:32 greg Exp $ */
 /*
  *  color.h - header for routines using pixel color values.
  *
@@ -11,13 +11,13 @@
  */
 #ifndef _RAD_COLOR_H_
 #define _RAD_COLOR_H_
+
+#include <stdlib.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <stdio.h>
-#include <stdlib.h>
-
 #define  RED		0
 #define  GRN		1
 #define  BLU		2
@@ -33,7 +33,8 @@ extern "C" {
 
 typedef BYTE  COLR[4];		/* red, green, blue (or X,Y,Z), exponent */
 
-typedef float  COLOR[3];	/* red, green, blue (or X,Y,Z) */
+typedef float COLORV;
+typedef COLORV  COLOR[3];	/* red, green, blue (or X,Y,Z) */
 
 typedef float  RGBPRIMS[4][2];	/* (x,y) chromaticities for RGBW */
 typedef float  (*RGBPRIMP)[2];	/* pointer to RGBPRIMS array */
@@ -113,7 +114,7 @@ typedef float  COLORMAT[3][3];	/* color coordinate con
 #define  D65EFFICACY		203.		/* standard illuminant D65 */
 #define  INCEFFICACY		160.		/* illuminant A (incand.) */
 #define  SUNEFFICACY		208.		/* illuminant B (solar dir.) */
-#define  SKYEFFICACY		D65EFFICACY	/* skylight */
+#define  SKYEFFICACY		D65EFFICACY	/* skylight (should be 110) */
 #define  DAYEFFICACY		D65EFFICACY	/* combined sky and solar */
 
 #define  luminance(col)		(WHTEFFICACY * bright(col))
@@ -217,17 +218,18 @@ extern int	clipgamut(COLOR col, double brt, int gamut,
 extern void	colortrans(COLOR c2, COLORMAT mat, COLOR c1);
 extern void	multcolormat(COLORMAT m3, COLORMAT m2,
 					COLORMAT m1);
-extern void	compxyz2rgbmat(COLORMAT mat, RGBPRIMS pr);
-extern void	comprgb2xyzmat(COLORMAT mat, RGBPRIMS pr);
-extern void	comprgb2rgbmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
-extern void	compxyzWBmat(COLORMAT mat, float wht1[2],
+extern int	colorprimsOK(RGBPRIMS pr);
+extern int	compxyz2rgbmat(COLORMAT mat, RGBPRIMS pr);
+extern int	comprgb2xyzmat(COLORMAT mat, RGBPRIMS pr);
+extern int	comprgb2rgbmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
+extern int	compxyzWBmat(COLORMAT mat, float wht1[2],
 				float wht2[2]);
-extern void	compxyz2rgbWBmat(COLORMAT mat, RGBPRIMS pr);
-extern void	comprgb2xyzWBmat(COLORMAT mat, RGBPRIMS pr);
-extern void	comprgb2rgbWBmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
+extern int	compxyz2rgbWBmat(COLORMAT mat, RGBPRIMS pr);
+extern int	comprgb2xyzWBmat(COLORMAT mat, RGBPRIMS pr);
+extern int	comprgb2rgbWBmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2);
 					/* defined in colrops.c */
-extern int	setcolrcor(double (*f)(), double a2);
-extern int	setcolrinv(double (*f)(), double a2);
+extern int	setcolrcor(double (*f)(double, double), double a2);
+extern int	setcolrinv(double (*f)(double, double), double a2);
 extern int	setcolrgam(double g);
 extern int	colrs_gambs(COLR *scan, int len);
 extern int	gambs_colrs(COLR *scan, int len);