BSD 4_3 release

[unix-history] / usr / src / lib / libc / compat-sys5 / strcmpn.c

/*
* 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);
}