"L. Spiro Engine"
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00001 /* 00002 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium 00003 * Copyright (c) 2002-2007, Professor Benoit Macq 00004 * Copyright (c) 2001-2003, David Janssens 00005 * Copyright (c) 2002-2003, Yannick Verschueren 00006 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe 00007 * Copyright (c) 2005, Herve Drolon, FreeImage Team 00008 * All rights reserved. 00009 * 00010 * Redistribution and use in source and binary forms, with or without 00011 * modification, are permitted provided that the following conditions 00012 * are met: 00013 * 1. Redistributions of source code must retain the above copyright 00014 * notice, this list of conditions and the following disclaimer. 00015 * 2. Redistributions in binary form must reproduce the above copyright 00016 * notice, this list of conditions and the following disclaimer in the 00017 * documentation and/or other materials provided with the distribution. 00018 * 00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' 00020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00022 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00023 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00024 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00025 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00026 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00027 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00029 * POSSIBILITY OF SUCH DAMAGE. 00030 */ 00031 00032 00033 #ifndef __LSI_JPEGFIXED_H__ 00034 #define __LSI_JPEGFIXED_H__ 00035 00036 #include "../LSIImageLib.h" 00037 00038 namespace lsi { 00039 00046 class CJpegFixed { 00047 // All is public. This class has no secrets. 00048 public : 00049 // == Functions. 00057 static LSE_INLINE LSINT32 LSE_CALL Mul( LSINT32 _i32A, LSINT32 _i32B ); 00058 }; 00059 00060 00061 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00062 // DEFINITIONS 00063 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 00064 // == Functions. 00072 LSE_INLINE LSINT32 LSE_CALL CJpegFixed::Mul( LSINT32 _i32A, LSINT32 _i32B ) { 00073 LSINT64 i64Temp = static_cast<LSINT64>(_i32A) * static_cast<LSINT64>(_i32B); 00074 i64Temp += i64Temp & 4096; 00075 return static_cast<LSINT32>(i64Temp >> 13); 00076 } 00077 00078 } // namespace lsi 00079 00080 #endif // __LSI_JPEGFIXED_H__