--- ray/src/rt/t_data.c	2003/02/25 02:47:23	2.6
+++ ray/src/rt/t_data.c	2004/03/30 16:13:01	2.8
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: t_data.c,v 2.6 2003/02/25 02:47:23 greg Exp $";
+static const char	RCSid[] = "$Id: t_data.c,v 2.8 2004/03/30 16:13:01 schorsch Exp $";
 #endif
 /*
  *  t_data.c - routine for stored textures
@@ -8,10 +8,9 @@ static const char	RCSid[] = "$Id: t_data.c,v 2.6 2003/
 #include "copyright.h"
 
 #include  "ray.h"
-
 #include  "data.h"
-
 #include  "func.h"
+#include  "rtotypes.h"
 
 /*
  *	A stored texture is specified as follows:
@@ -31,9 +30,11 @@ static const char	RCSid[] = "$Id: t_data.c,v 2.6 2003/
  */
 
 
-t_data(m, r)			/* interpolate texture data */
-register OBJREC  *m;
-RAY  *r;
+extern int
+t_data(			/* interpolate texture data */
+	register OBJREC  *m,
+	RAY  *r
+)
 {
 	int  nv;
 	FVECT  disp;
@@ -52,7 +53,7 @@ RAY  *r;
 	errno = 0;
 	for (i = 0; i < nv; i++)
 		pt[i] = evalue(mf->ep[i]);
-	if (errno)
+	if (errno == EDOM || errno == ERANGE)
 		goto computerr;
 	dval[0] = datavalue(dp, pt);
 	for (i = 1; i < 3; i++) {
@@ -64,7 +65,7 @@ RAY  *r;
 	errno = 0;
 	for (i = 0; i < 3; i++)
 		disp[i] = funvalue(m->oargs.sarg[i], 3, dval);
-	if (errno)
+	if (errno == EDOM || errno == ERANGE)
 		goto computerr;
 	if (mf->f != &unitxf)
 		multv3(disp, disp, mf->f->xfm);