--- ray/src/common/rtmath.h	2003/07/12 09:56:24	3.2
+++ ray/src/common/rtmath.h	2013/02/07 20:19:52	3.5
@@ -1,20 +1,20 @@
-/* RCSid $Id: rtmath.h,v 3.2 2003/07/12 09:56:24 schorsch Exp $ */
+/* RCSid $Id: rtmath.h,v 3.5 2013/02/07 20:19:52 greg Exp $ */
 /*
  * Header for Radiance vector and math routines
  */
 
 #ifndef _RAD_RTMATH_H_
 #define _RAD_RTMATH_H_
-#ifdef __cplusplus
-extern "C" {
-#endif
 
 #include  <math.h>
 
-#include  "tifftypes.h"
-
+#include  "tiff.h"		/* needed for int32, etc. */
 #include  "mat4.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 				/* regular transformation */
 typedef struct {
 	MAT4  xfm;				/* transform matrix */
@@ -45,6 +45,7 @@ typedef struct {
 #endif
 					/* defined in tcos.c */
 extern double	tcos(double x);
+extern double	aatan2(double y, double x);
 					/* defined in xf.c */
 extern int	xf(XF *ret, int ac, char *av[]);
 extern int	invxf(XF *ret, int ac, char *av[]);