mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
|
/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 of the
|
||
|
|
License, or (at your option) any later version.
|
||
|
|
|
||
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
||
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
||
|
|
Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
#include <ansidecl.h>
|
||
|
|
#include <stddef.h> /* For size_t and NULL. */
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copy no more than N bytes of SRC to DEST, stopping when C is found.
|
||
|
|
* Return the position in DEST one byte past where C was copied,
|
||
|
|
* or NULL if C was not found in the first N bytes of SRC.
|
||
|
|
*/
|
||
|
|
PTR
|
||
|
|
DEFUN(__memccpy, (dest, src, c, n),
|
||
|
|
PTR dest AND CONST PTR src AND int c AND size_t n)
|
||
|
|
{
|
||
|
|
register CONST char *s = src;
|
||
|
|
register char *d = dest;
|
||
|
|
register CONST int x = (unsigned char) c;
|
||
|
|
register size_t i = n;
|
||
|
|
|
||
|
|
while (i-- > 0)
|
||
|
|
if ((*d++ = *s++) == x)
|
||
|
|
return d;
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
weak_alias (__memccpy, memccpy)
|