--- ray/src/common/tmprivat.h	2005/01/07 21:41:06	3.15
+++ ray/src/common/tmprivat.h	2009/02/09 20:23:51	3.18
@@ -1,4 +1,4 @@
-/* RCSid $Id: tmprivat.h,v 3.15 2005/01/07 21:41:06 greg Exp $ */
+/* RCSid $Id: tmprivat.h,v 3.18 2009/02/09 20:23:51 greg Exp $ */
 /*
  * Private header file for tone mapping routines.
  */
@@ -37,6 +37,9 @@ extern "C" {
 #define MINBRT		(-16*TM_BRTSCALE)	/* minimum usable brightness */
 #define MINLUM		(1.125352e-7)		/* tmLuminance(MINBRT) */
 
+#define HISTI(li)	(((li)-MINBRT)/HISTEP)
+#define HISTV(i)	(MINBRT + HISTEP/2 + (i)*HISTEP)
+
 #define LMESLOWER	(5.62e-3)		/* lower mesopic limit */
 #define	LMESUPPER	(5.62)			/* upper mesopic limit */
 #if	(TM_BRTSCALE==128)
@@ -54,6 +57,8 @@ extern "C" {
 #define normscot(c)	( (	(int32)(SCO_rf*256.+.5)*(c)[RED] + \
 				(int32)(SCO_gf*256.+.5)*(c)[GRN] + \
 				(int32)(SCO_bf*256.+.5)*(c)[BLU]	) >> 8 )
+
+extern int	tmNewMap(TMstruct *tms);	/* allocate new tone-mapping */
 
 #ifndef	malloc
 MEM_PTR		malloc();