strncat.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* from UCB 4.1 80/12/21 */
/*
* Concatenate s2 on the end of s1. S1's space must be large enough.
* At most n characters are moved.
* Return s1.
*/
char *
strncat(s1, s2, n)
register char *s1, *s2;
register n;
{
register char *os1;
os1 = s1;
while (*s1++)
;
--s1;
while (*s1++ = *s2++)
if (--n < 0) {
*--s1 = '\0';
break;
}
return (os1);
}