usr/src/lib/libbc/libc/gen/common/memccpy.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984 AT&T */
  23 /*        All Rights Reserved   */
  24
  25 #pragma ident   "%Z%%M% %I%     %E% SMI"  /* from S5R2 1.1 */
  26
  27 /*LINTLIBRARY*/
  28 /*
  29  * Copy s2 to s1, stopping if character c is copied. Copy no more than n bytes.
  30  * Return a pointer to the byte after character c in the copy,
  31  * or NULL if c is not found in the first n bytes.
  32  */
  33 char *
  34 memccpy(s1, s2, c, n)
  35 register char *s1, *s2;
  36 register int c, n;
  37 {
  38         while (--n >= 0)
  39                 if ((*s1++ = *s2++) == c)
  40                         return (s1);
  41         return (0);
  42 }