--- pgp/src/usuals.h	2018/04/24 16:37:54	1.1
+++ pgp/src/usuals.h	2018/04/24 16:41:20	1.1.1.5
@@ -8,7 +8,11 @@ typedef unsigned char byte;	/* values ar
 typedef byte *byteptr;	/* pointer to byte */
 typedef char *string;	/* pointer to ASCII character string */
 typedef unsigned short word16;	/* values are 0-65535 */
+#ifdef __alpha
+typedef unsigned int word32;	/* values are 0-4294967295 */
+#else
 typedef unsigned long word32;	/* values are 0-4294967295 */
+#endif
 
 #ifndef TRUE
 #define FALSE 0
@@ -16,9 +20,22 @@ typedef unsigned long word32;	/* values
 #endif	/* if TRUE not already defined */
 
 #ifndef min	/* if min macro not already defined */
-#define min(a,b) ( (a)<(b) ? (a) : (b) )
-#define max(a,b) ( (a)>(b) ? (a) : (b) )
+#define min(a,b) (((a)<(b)) ? (a) : (b) )
+#define max(a,b) (((a)>(b)) ? (a) : (b) )
 #endif	/* if min macro not already defined */
 
-#endif	/* if USUALS not already defined */
+/* void for use in pointers */
+#ifndef NO_VOID_STAR
+#define	VOID	void
+#else
+#define	VOID	char
+#endif
+
+	/* Zero-fill the byte buffer. */
+#define fill0(buffer,count)	memset( buffer, 0, count )
 
+	/* This macro is for burning sensitive data.  Many of the
+	   file I/O routines use it for zapping buffers */
+#define burn(x) fill0((VOID *)&(x),sizeof(x))
+
+#endif	/* if USUALS not already defined */