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view src/win32/7zip/7z/CPP/7zip/Compress/BitlDecoder.cpp @ 1:f9f4f1b99eed

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importing src directory
author Robert McIntyre <rlm@mit.edu>
date Sat, 03 Mar 2012 10:31:27 -0600
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     1 // BitlDecoder.cpp



     2 



     3 #include "StdAfx.h"



     4 



     5 #include "BitlDecoder.h"



     6 



     7 namespace NBitl {



     8 



     9 Byte kInvertTable[256];



    10 



    11 struct CInverterTableInitializer



    12 {



    13   CInverterTableInitializer()



    14   {



    15     for (int i = 0; i < 256; i++)



    16     {



    17       int x = ((i & 0x55) << 1) | ((i & 0xAA) >> 1);



    18       x = ((x & 0x33) << 2) | ((x & 0xCC) >> 2);



    19       kInvertTable[i] = (Byte)(((x & 0x0F) << 4) | ((x & 0xF0) >> 4));



    20     }



    21   }



    22 } g_InverterTableInitializer;



    23 



    24 }