--- ray/src/common/standard.h	2003/06/20 00:25:49	2.27
+++ ray/src/common/standard.h	2003/06/21 14:48:54	2.29
@@ -1,4 +1,4 @@
-/* RCSid $Id: standard.h,v 2.27 2003/06/20 00:25:49 greg Exp $ */
+/* RCSid $Id: standard.h,v 2.29 2003/06/21 14:48:54 greg Exp $ */
 /*
  *	Miscellaneous definitions required by many routines.
  */
@@ -78,7 +78,7 @@ extern char  errmsg[];			/* global buffer for error me
 #define  tsin			sin
 #define  ttan			tan
 #else
-extern double	tcos();			/* table-based cosine approximation */
+					/* table-based cosine approximation */
 #define  tsin(x)		tcos((x)-(PI/2.))
 #define  ttan(x)		(tsin(x)/tcos(x))
 #endif
@@ -103,7 +103,9 @@ extern double	tcos();			/* table-based cosine approxim
 #define	 index			strchr
 #define	 rindex			strrchr
 #endif
-extern off_t  lseek();
+
+			/* <unistd.h> is missing on some systems */
+extern off_t  lseek(int, off_t, int);
 
 #ifdef _WIN32
 #define NIX 1