1 /* Binary exclusive OR operation of two memory blocks. -*- coding: utf-8 -*- 2 Copyright (C) 2005-2006, 2009-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 This file 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Simon Josefsson. The interface was inspired by memxor 18 in Niels Möller's Nettle. */ 19 20 #include <config.h> 21 22 #include "memxor.h" 23 24 void * 25 memxor (void *restrict dest, const void *restrict src, size_t n) /* */ 26 { 27 char const *s = src; 28 char *d = dest; 29 30 for (; n > 0; n--) 31 *d++ ^= *s++; 32 33 return dest; 34 }