--- ray/src/common/tmapcolrs.c	2005/10/24 04:25:01	3.22
+++ ray/src/common/tmapcolrs.c	2005/11/15 06:53:00	3.23
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: tmapcolrs.c,v 3.22 2005/10/24 04:25:01 greg Exp $";
+static const char	RCSid[] = "$Id: tmapcolrs.c,v 3.23 2005/11/15 06:53:00 greg Exp $";
 #endif
 /*
  * Routines for tone mapping on Radiance RGBE and XYZE pictures.
@@ -432,8 +432,7 @@ register TMstruct	*tms;
 	cd = (COLRDATA *)tms->pd[colrReg];
 	for (i = 3; i--; )
 		cd->clfb[i] = 0x100*tms->clf[i] + .5;
-	d = TM_BRTSCALE*log(tms->inpsf);
-	cd->inpsfb = d<0. ? d-.5 : d+.5;
+	cd->inpsfb = tmCvLuminance(tms->inpsf);
 	for (i = 3; i--; )
 		for (j = 3; j--; ) {
 			d = tms->cmat[i][j] / tms->inpsf;