4.3BSD-UWisc/src/lib/libc/compat-sys5/strcmpn.c

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#if defined(LIBC_RCS) && !defined(lint)
static char rcs_id[] =
	"$Header: strcmpn.c,v 1.2 86/09/08 17:04:41 tadl Exp $";
#endif
/*
 * RCS info
 *	$Locker:  $
 */
/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strcmpn.c	4.3 (Berkeley) 3/9/86";
#endif LIBC_SCCS and not lint

/*
 * Compare strings (at most n bytes):  s1>s2: >0  s1==s2: 0  s1<s2: <0
 */

strcmpn(s1, s2, n)
register char *s1, *s2;
register n;
{

	while (--n >= 0 && *s1 == *s2++)
		if (*s1++ == '\0')
			return(0);
	return(n<0 ? 0 : *s1 - *--s2);
}