From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/generic/memccpy.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 sysdeps/generic/memccpy.c (limited to 'sysdeps/generic/memccpy.c') diff --git a/sysdeps/generic/memccpy.c b/sysdeps/generic/memccpy.c new file mode 100644 index 0000000000..b905952527 --- /dev/null +++ b/sysdeps/generic/memccpy.c @@ -0,0 +1,44 @@ +/* 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 +#include /* 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) -- cgit v1.2.3