renamed and reorganized "jp3d" directory to "openjpeg3d". Is now a standalone directory, with independent cmake files. Done as it uses its own version of the openjpeg library and does not depend on the one currently developped. Will be removed from the trunk and stored in a branch.
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libopenjpeg3d/fix.h
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62
libopenjpeg3d/fix.h
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/*
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __FIX_H
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#define __FIX_H
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#if defined(_MSC_VER) || defined(__BORLANDC__)
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#define int64 __int64
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#else
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#define int64 long long
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#endif
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/**
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@file fix.h
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@brief Implementation of operations of specific multiplication (FIX)
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The functions in FIX.H have for goal to realize specific multiplication.
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*/
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/** @defgroup FIX FIX - Implementation of operations of specific multiplication */
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/*@{*/
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/**
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Multiply two fixed-precision rational numbers.
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@param a
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@param b
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@return Returns a * b
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*/
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static int fix_mul(int a, int b) {
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int64 temp = (int64) a * (int64) b >> 12;
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return (int) ((temp >> 1) + (temp & 1)) ;
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}
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/*@}*/
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#endif /* __FIX_H */
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