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45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Copyright (C) 1991, 1995 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <stddef.h> /* For size_t and NULL. */
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/*
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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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*/
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PTR
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DEFUN(__memccpy, (dest, src, c, n),
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PTR dest AND CONST PTR src AND int c AND size_t n)
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{
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register CONST char *s = src;
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register char *d = dest;
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register CONST int x = (unsigned char) c;
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register size_t i = n;
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while (i-- > 0)
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if ((*d++ = *s++) == x)
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return d;
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return NULL;
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}
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weak_alias (__memccpy, memccpy)
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