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https://github.com/DarkFlippers/unleashed-firmware
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33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
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/* memxor.c -- perform binary exclusive OR operation of two memory blocks.
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Copyright (C) 2005, 2006 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Simon Josefsson. The interface was inspired by memxor
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in Niels Möller's Nettle. */
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/* #include <config.h> */
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#include "memxor.h"
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void* memxor(void* /*restrict*/ dest, const void* /*restrict*/ src, size_t n) {
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char const* s = (char const*)src;
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char* d = (char*)dest;
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for(; n > 0; n--) *d++ ^= *s++;
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return dest;
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}
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