--- ray/src/common/mat4.h	1995/11/10 17:04:18	2.3
+++ ray/src/common/mat4.h	2003/02/25 02:47:21	2.5
@@ -1,11 +1,10 @@
-/* Copyright (c) 1990 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid $Id: mat4.h,v 2.5 2003/02/25 02:47:21 greg Exp $ */
 /*
  * Definitions for 4x4 matrix operations
  */
 
+#include "copyright.h"
+
 #include  "fvect.h"
 
 typedef FLOAT  MAT4[4][4];
@@ -22,3 +21,19 @@ typedef FLOAT  MAT4[4][4];
 extern MAT4  m4ident;
 
 #define  setident4(m4)		copymat4(m4, m4ident)
+
+#ifdef NOPROTO
+
+extern void	multmat4();
+extern void	multv3();
+extern void	multp3();
+extern int	invmat4();
+
+#else
+
+extern void	multmat4(MAT4 m4a, MAT4 m4b, MAT4 m4c);
+extern void	multv3(FVECT v3a, FVECT v3b, MAT4 m4);
+extern void	multp3(FVECT p3a, FVECT p3b, MAT4 m4);
+extern int	invmat4(MAT4 inverse, MAT4 mat);
+
+#endif