newlib-cygwin/newlib/libc/string/wmemmove.c

76 lines
2.7 KiB
C

/*
FUNCTION
<<wmemmove>>---copy wide characters in memory with overlapping areas
SYNOPSIS
#include <wchar.h>
wchar_t *wmemmove(wchar_t *<[d]>, const wchar_t *<[s]>, size_t <[n]>);
DESCRIPTION
The <<wmemmove>> function copies <[n]> wide characters from the object
pointed to by <[s]> to the object pointed to by <[d]>. Copying takes
place as if the <[n]> wide characters from the object pointed to by
<[s]> are first copied into a temporary array of <[n]> wide characters
that does not overlap the objects pointed to by <[d]> or <[s]>, and then
the <[n]> wide characters from the temporary array are copied into the
object pointed to by <[d]>.
This function is not affected by locale and all wchar_t values are
treated identically. The null wide character and wchar_t values not
corresponding to valid characters are not treated specially.
If <[n]> is zero, <[d]> and <[s]> must be a valid pointers, and the
function copies zero wide characters.
RETURNS
The <<wmemmove>> function returns the value of <[d]>.
PORTABILITY
<<wmemmove>> is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.
*/
/* $NetBSD: wmemmove.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */
/*-
* Copyright (c)1999 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* citrus Id: wmemmove.c,v 1.2 2000/12/20 14:08:31 itojun Exp
*/
#include <_ansi.h>
#include <string.h>
#include <wchar.h>
wchar_t *
wmemmove (wchar_t * d,
const wchar_t * s,
size_t n)
{
return (wchar_t *) memmove (d, s, n * sizeof (wchar_t));
}