diff options
author | Simon Josefsson <simon@josefsson.org> | 2005-10-05 13:29:53 +0000 |
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committer | Simon Josefsson <simon@josefsson.org> | 2005-10-05 13:29:53 +0000 |
commit | 8ee4abda8a85170a0748ce56c4571aed5d9257ce (patch) | |
tree | 92d43bcf2111f15a427ee19e6cf919d6062e0c6b /lib/memxor.c | |
parent | 72a09f7cd6c30624a5805f088e99e0e6b9a654cf (diff) | |
download | gnulib-8ee4abda8a85170a0748ce56c4571aed5d9257ce.tar.gz |
Add memxor.
Diffstat (limited to 'lib/memxor.c')
-rw-r--r-- | lib/memxor.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/memxor.c b/lib/memxor.c new file mode 100644 index 0000000000..ac922a8048 --- /dev/null +++ b/lib/memxor.c @@ -0,0 +1,36 @@ +/* memxor.c -- perform binary exclusive OR operation of two memory blocks. + Copyright (C) 2005 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Written by Simon Josefsson. The interface was inspired by memxor + in Niels Möller's Nettle. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include "memxor.h" + +void * +memxor (void *restrict dest, const void *restrict src, size_t n) +{ + char *d = dest; + + for (; n > 0; n--) + *d++ ^= *src++; + + return dest; +} |