--- ray/src/common/standard.h	2003/02/25 02:47:22	2.17
+++ ray/src/common/standard.h	2003/03/27 04:16:33	2.20
@@ -1,4 +1,4 @@
-/* RCSid $Id: standard.h,v 2.17 2003/02/25 02:47:22 greg Exp $ */
+/* RCSid $Id: standard.h,v 2.20 2003/03/27 04:16:33 greg Exp $ */
 /*
  *	Miscellaneous definitions required by many routines.
  */
@@ -87,11 +87,11 @@ extern double	tcos();			/* table-based cosine approxim
 #define  ttan(x)		(tsin(x)/tcos(x))
 #endif
 					/* custom version of assert(3) */
-#define  CHECK(be,et,em)	((be) ? error(et,em) : 0)
+#define  CHECK(be,et,em)	if (be) error(et,em) else
 #ifdef  DEBUG
 #define  DCHECK			CHECK
 #else
-#define  DCHECK(be,et,em)	0
+#define  DCHECK(be,et,em)	(void)0
 #endif
 					/* memory operations */
 #ifdef	NOSTRUCTASS
@@ -170,6 +170,10 @@ extern int	xf();
 extern int	invxf();
 extern int	fullxf();
 extern int	quadtratic();
+extern int4	encodedir();
+extern void	decodedir();
+extern double	dir2diff();
+extern double	fdir2diff();
 extern void	eputs();
 extern void	wputs();
 extern void	quit();
@@ -219,7 +223,7 @@ extern int	readbuf(int fd, char *bpos, int siz);
 extern int	writebuf(int fd, char *bpos, int siz);
 					/* defined in rexpr.c */
 extern int	ecompile(char *sp, int iflg, int wflag);
-extern char	*expsave();
+extern char	*expsave(void);
 extern void	expset(char *ep);
 extern char	*eindex(char *sp);
 					/* defined in savestr.c */
@@ -251,6 +255,11 @@ extern int	invxf(XF *ret, int ac, char *av[]);
 extern int	fullxf(FULLXF *fx, int ac, char *av[]);
 					/* defined in zeroes.c */
 extern int	quadtratic(double *r, double a, double b, double c);
+					/* defined in dircode.c */
+extern int4	encodedir(FVECT dv);
+extern void	decodedir(FVECT dv, int4 dc);
+extern double	dir2diff(int4 dc1, int4 dc2);
+extern double	fdir2diff(int4 dc1, FVECT v2);
 					/* miscellaneous */
 extern void	eputs(char *s);
 extern void	wputs(char *s);