lib/memxor.c

/* Binary exclusive OR operation of two memory blocks.  -*- coding: utf-8 -*-
   Copyright (C) 2005-2006, 2009-2026 Free Software Foundation, Inc.

   This file 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 2.1 of the
   License, or (at your option) any later version.

   This file 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* Written by Simon Josefsson.  The interface was inspired by memxor
   in Niels Möller's Nettle. */

#include <config.h>

#include "memxor.h"

void *
memxor (void *restrict dest, const void *restrict src, size_t n)
{
  char const *s = src;
  char *d = dest;

  for (; n > 0; n--)
    *d++ ^= *s++;

  return dest;
}