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annotate lib/memxor.h @ 16040:b8acd8099b25

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New module 'fmaf'. * lib/math.in.h (fmaf): New declaration. * lib/fmaf.c: New file. * m4/fmaf.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whethern fmaf is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_FMAF, HAVE_FMAF, REPLACE_FMAF. * modules/math (Makefile.am): Substitute GNULIB_FMAF, HAVE_FMAF, REPLACE_FMAF. * modules/fmaf: New file. * doc/posix-functions/fmaf.texi: Mention the new module and the various bugs.
author Bruno Haible <bruno@clisp.org>
date Mon, 17 Oct 2011 23:51:21 +0200
parents 97fc9a21a8fb
children 8250f2777afc
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Simon Josefsson <simon@josefsson.org>
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1 /* memxor.h -- perform binary exclusive OR operation on memory blocks.
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Jim Meyering <meyering@redhat.com>
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2 Copyright (C) 2005, 2009-2011 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 /* Written by Simon Josefsson. The interface was inspired by memxor
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19 in Niels Möller's Nettle. */
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20
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21 #ifndef MEMXOR_H
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22 # define MEMXOR_H
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23
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24 #include <stddef.h>
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25
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26 /* Compute binary exclusive OR of memory areas DEST and SRC, putting
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27 the result in DEST, of length N bytes. Returns a pointer to
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28 DEST. */
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29 void *memxor (void *restrict dest, const void *restrict src, size_t n);
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30
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31 #endif /* MEMXOR_H */