sortix-mirror/libc/wchar/wmemmove.c

42 lines
1.3 KiB
C

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
wchar/wmemmove.c
Copy wide memory between potentially overlapping regions.
*******************************************************************************/
#include <stdint.h>
#include <wchar.h>
wchar_t* wmemmove(wchar_t* dst, const wchar_t* src, size_t n)
{
if ( (uintptr_t) dst < (uintptr_t) src )
{
for ( size_t i = 0; i < n; i++ )
dst[i] = src[i];
}
else
{
for ( size_t i = 0; i < n; i++ )
dst[n-(i+1)] = src[n-(i+1)];
}
return dst;
}