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47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* Copyright (C) 1991, 1992, 1995, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <string.h>
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/* Copy no more than N bytes of SRC to DEST, stopping when C is found.
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Return the position in DEST one byte past where C was copied,
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or NULL if C was not found in the first N bytes of SRC. */
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void *
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__memccpy (dest, src, c, n)
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void *dest;
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const void *src;
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int c;
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size_t nbytes;
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{
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/* Except when N > 65535, this is what a hand-coded version would
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do anyway. */
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void *found = memchr (src, c, n);
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if (found == NULL)
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{
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(void) memcpy (dest, src, n);
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return NULL;
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}
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(void) memcpy (dest, src, (char *) found + 1 - (char *) src);
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return (PTR) ((char *) dest + ((char *) found + 1 - (char *) src));
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}
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weak_alias (__memccpy, memccpy)
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