- Update the manual page of bcmp(3) by replacing

.In string.h
   with
     .In strings.h
   and adding a sentence to the HISTORY section.
 - Use an ANSI-C function definition.
 - Include <strings.h> instead of <string.h>.
 - Apply style(9): Put a space after return keywords.

lib/libc/string/bcmp.3

@@ -43,7 +43,7 @@
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
-.In string.h
+.In strings.h
 .Ft int
 .Fn bcmp "const void *b1" "const void *b2" "size_t len"
 .Sh DESCRIPTION
@@ -72,3 +72,10 @@ A
 .Fn bcmp
 function first appeared in
 .Bx 4.2 .
+Its prototype existed previously in
+.Aq Pa string.h
+before it was moved to
+.Aq Pa strings.h
+for
+.St -p1003.1-2001
+compliance.

lib/libc/string/bcmp.c

@@ -37,25 +37,23 @@ static char sccsid[] = "@(#)bcmp.c	8.1 (Berkeley) 6/4/93";
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <string.h>
+#include <strings.h>
 
 /*
  * bcmp -- vax cmpc3 instruction
  */
 int
-bcmp(b1, b2, length)
-	const void *b1, *b2;
-	size_t length;
+bcmp(const void *b1, const void *b2, size_t length)
 {
 	char *p1, *p2;
 
 	if (length == 0)
-		return(0);
+		return (0);
 	p1 = (char *)b1;
 	p2 = (char *)b2;
 	do
 		if (*p1++ != *p2++)
 			break;
 	while (--length);
-	return(length);
+	return (length);
 }