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[glibc.git] / sysdeps / vax / memccpy.c
blob97fa3a0fe6fb3abcec71badcd3a676433c469d16
1 /* Copyright (C) 1991, 1992, 1995, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #include <string.h>
21 /* Copy no more than N bytes of SRC to DEST, stopping when C is found.
22 Return the position in DEST one byte past where C was copied,
23 or NULL if C was not found in the first N bytes of SRC. */
24 void *
25 __memccpy (dest, src, c, n)
26 void *dest;
27 const void *src;
28 int c;
29 size_t nbytes;
31 /* Except when N > 65535, this is what a hand-coded version would
32 do anyway. */
34 void *found = memchr (src, c, n);
36 if (found == NULL)
38 (void) memcpy (dest, src, n);
39 return NULL;
42 (void) memcpy (dest, src, (char *) found + 1 - (char *) src);
43 return (PTR) ((char *) dest + ((char *) found + 1 - (char *) src));
46 weak_alias (__memccpy, memccpy)