xref: /titanic_44/usr/src/lib/libbc/libc/gen/common/strncat.c (revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate  * with the License.
87c478bd9Sstevel@tonic-gate  *
97c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate  * and limitations under the License.
137c478bd9Sstevel@tonic-gate  *
147c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate  *
207c478bd9Sstevel@tonic-gate  * CDDL HEADER END
217c478bd9Sstevel@tonic-gate  */
22*5d54f3d8Smuffin /*
23*5d54f3d8Smuffin  * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
24*5d54f3d8Smuffin  * Use is subject to license terms.
25*5d54f3d8Smuffin  */
26*5d54f3d8Smuffin 
277c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * Concatenate s2 on the end of s1.  S1's space must be large enough.
317c478bd9Sstevel@tonic-gate  * At most n characters are moved.
327c478bd9Sstevel@tonic-gate  * Return s1.
337c478bd9Sstevel@tonic-gate  */
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate char *
strncat(char * s1,char * s2,int n)36*5d54f3d8Smuffin strncat(char *s1, char *s2, int n)
377c478bd9Sstevel@tonic-gate {
38*5d54f3d8Smuffin 	char *os1;
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate 	os1 = s1;
417c478bd9Sstevel@tonic-gate 	while (*s1++)
427c478bd9Sstevel@tonic-gate 		;
437c478bd9Sstevel@tonic-gate 	--s1;
447c478bd9Sstevel@tonic-gate 	while (*s1++ = *s2++)
457c478bd9Sstevel@tonic-gate 		if (--n < 0) {
467c478bd9Sstevel@tonic-gate 			*--s1 = '\0';
477c478bd9Sstevel@tonic-gate 			break;
487c478bd9Sstevel@tonic-gate 		}
497c478bd9Sstevel@tonic-gate 	return (os1);
507c478bd9Sstevel@tonic-gate }
51