--- ray/src/rt/srcsupp.c	1991/06/25 13:11:55	1.6
+++ ray/src/rt/srcsupp.c	1991/06/25 16:42:03	1.8
@@ -105,7 +105,7 @@ register OBJREC  *so;
 	theta = PI/180.0/2.0 * so->oargs.farg[3];
 	if (theta <= FTINY)
 		objerror(so, USER, "zero size");
-	src->ss = theta >= PI/4 ? 1.0 : tan(theta);
+	src->ss = theta >= PI/4.0 ? 1.0 : tan(theta);
 	src->ss2 = 2.0*PI * (1.0 - cos(theta));
 }
 
@@ -288,10 +288,10 @@ FVECT  nrm;		/* source surface normal */
 
 	d = DOT(sp->aim, nrm);
 	if (d > FTINY)			/* center in front? */
-		return(0);
+		return(1);
 					/* else check horizon */
 	d1 = 1. - sp->siz/(2.*PI);
-	return(1.-FTINY-d*d > d1*d1);
+	return(1.-FTINY-d*d < d1*d1);
 }