Mercurial > hg > octave-nkf > gnulib-hg
changeset 6334:4b643b12df55
Add memxor.
author | Simon Josefsson <simon@josefsson.org> |
---|---|
date | Wed, 05 Oct 2005 13:29:53 +0000 |
parents | 2cb18c08d152 |
children | 7eaa3cbec8e5 |
files | ChangeLog lib/ChangeLog lib/memxor.c lib/memxor.h m4/ChangeLog m4/memxor.m4 modules/memxor |
diffstat | 7 files changed, 110 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,7 @@ 2005-10-05 Simon Josefsson <jas@extundo.com> + * modules/memxor: New file. + * modules/iconv (Files): Move config.rpath to havelib, it is used there.
--- a/lib/ChangeLog +++ b/lib/ChangeLog @@ -1,5 +1,7 @@ 2005-10-05 Simon Josefsson <jas@extundo.com> + * memxor.h, memxor.c: New files. + * getaddrinfo.h: Don't protect sys/types.h with HAVE_SYS_TYPES_H, we assume all systems have it, suggested by Jim Meyering <jim@meyering.net>. Remove HAVE_SYS_SOCKET_H test too, to see if
new file mode 100644 --- /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; +}
new file mode 100644 --- /dev/null +++ b/lib/memxor.h @@ -0,0 +1,31 @@ +/* memxor.h -- perform binary exclusive OR operation on 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. */ + +#ifndef MEMXOR_H +# define MEMXOR_H + +#include <stddef.h> + +/* Compute binary exclusive OR of memory areas DEST and SRC, putting + the result in DEST, of length N bytes. Returns a pointer to + DEST. */ +void *memxor (void *restrict dest, const void *restrict src, size_t n); + +#endif /* MEMXOR_H */
--- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,7 @@ +2005-10-05 Simon Josefsson <jas@extundo.com> + + * memxor.m4: New file. + 2005-10-02 Paul Eggert <eggert@cs.ucla.edu> Sync from coreutils.
new file mode 100644 --- /dev/null +++ b/m4/memxor.m4 @@ -0,0 +1,11 @@ +# memxor.m4 serial 1 +dnl Copyright (C) 2005 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_MEMXOR], +[ + AC_LIBSOURCES([memxor.h, memxor.c]) + AC_LIBOBJ([memxor]) +])
new file mode 100644 --- /dev/null +++ b/modules/memxor @@ -0,0 +1,24 @@ +Description: +memxor() function: binary exclusive or operation on two memory blocks + +Files: +lib/memxor.h +lib/memxor.c +m4/memxor.m4 + +Depends-on: +restrict + +configure.ac: +gl_MEMXOR + +Makefile.am: + +Include: +"memxor.h" + +License: +LGPL + +Maintainer: +Simon Josefsson