--- ray/src/rt/normal.c	2003/03/12 04:59:05	2.41
+++ ray/src/rt/normal.c	2003/07/27 22:12:03	2.45
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: normal.c,v 2.41 2003/03/12 04:59:05 greg Exp $";
+static const char RCSid[] = "$Id: normal.c,v 2.45 2003/07/27 22:12:03 schorsch Exp $";
 #endif
 /*
  *  normal.c - shading function for normal materials.
@@ -23,7 +23,7 @@ static const char RCSid[] = "$Id: normal.c,v 2.41 2003
 #define  MAXITER	10		/* maximum # specular ray attempts */
 #endif
 					/* estimate of Fresnel function */
-#define  FRESNE(ci)	(exp(-6.0*(ci)) - 0.00247875217)
+#define  FRESNE(ci)	(exp(-5.85*(ci)) - 0.00287989916)
 
 static void  gaussamp();
 
@@ -87,7 +87,7 @@ double  omega;			/* light source size */
 
 				/* Fresnel estimate */
 	ldiff = np->rdiff;
-	if (np->specfl & SP_PURE && (np->rspec > FTINY & ldiff > FTINY))
+	if (np->specfl & SP_PURE && (np->rspec > FTINY) & (ldiff > FTINY))
 		ldiff *= 1. - FRESNE(fabs(ldot));
 
 	if (ldot > FTINY && ldiff > FTINY) {
@@ -198,14 +198,14 @@ register RAY  *r;
 	if ((nd.alpha2 *= nd.alpha2) <= FTINY)
 		nd.specfl |= SP_PURE;
 
-	if (hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY)) {
+	if ( (hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY)) ) {
 		nd.pdot = raynormal(nd.pnorm, r);	/* perturb normal */
 	} else {
 		VCOPY(nd.pnorm, r->ron);
 		nd.pdot = r->rod;
-		if (r->ro != NULL && isflat(r->ro->otype))
-			nd.specfl |= SP_FLAT;
 	}
+	if (r->ro != NULL && isflat(r->ro->otype))
+		nd.specfl |= SP_FLAT;
 	if (nd.pdot < .001)
 		nd.pdot = .001;			/* non-zero for dirnorm() */
 	multcolor(nd.mcolor, r->pcol);		/* modify material color */