--- ray/src/common/tonemap.h	1997/04/21 15:23:42	3.5
+++ ray/src/common/tonemap.h	1997/07/29 11:54:45	3.6
@@ -58,6 +58,8 @@
 #endif
 
 extern char	*tmErrorMessage[];	/* error messages */
+extern int	tmLastError;		/* last error incurred by library */
+extern char	*tmLastFunction;	/* error-generating function name */
 
 typedef short	TMbright;		/* encoded luminance type */