1 /* memxor.h -- perform binary exclusive OR operation on memory blocks. 2 Copyright (C) 2005, 2009, 2010 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 17 18 /* Written by Simon Josefsson. The interface was inspired by memxor 19 in Niels Möller's Nettle. */ 20 21 #ifndef MEMXOR_H 22 # define MEMXOR_H 23 24 #include <stddef.h> 25 26 /* Compute binary exclusive OR of memory areas DEST and SRC, putting 27 the result in DEST, of length N bytes. Returns a pointer to 28 DEST. */ 29 void *memxor (void * /*restrict*/ dest, const void * /*restrict*/ src, size_t n); 30 31 #endif /* MEMXOR_H */ 32