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  • hex2bin

    typedef BYTE unsigned char;
    </pre><pre code_snippet_id="1639451" snippet_file_name="blog_20160408_3_9633505" name="code" class="cpp">BYTE  HexChar[256]={0};
     
    void  InitHexBuff()
    {
        HexChar[0] = '0';
        HexChar[1] = '1';
        HexChar[2] = '2';
        HexChar[3] = '3';
        HexChar[4] = '4';
        HexChar[5] = '5';
        HexChar[6] = '6';
        HexChar[7] = '7';
        HexChar[8] = '8';
        HexChar[9] = '9';
        HexChar[0xA] ='A';
        HexChar[0xB] = 'B';
        HexChar[0xC] = 'C';
        HexChar[0xD] = 'D';
        HexChar[0xE] = 'E';
        HexChar[0xF] = 'F';
        HexChar['0'] = 0;
        HexChar['1'] = 1;
        HexChar['2'] = 2;
        HexChar['3'] = 3;
        HexChar['4'] = 4;
        HexChar['5'] = 5;
        HexChar['6'] = 6;
        HexChar['7'] = 7;
        HexChar['8'] = 8;
        HexChar['9'] = 9;
        HexChar['A'] = 0xA;
        HexChar['B'] = 0xB;
        HexChar['C'] = 0xC;
        HexChar['D'] = 0xD;
        HexChar['E'] = 0xE;
        HexChar['F'] = 0xF;
         
    }
     
    void  Hex2Bin(char* hex,int len,BYTE* Outbuff)
    {
        for (int i = 0;i<len;i+=2)
        {
            BYTE a = hex[i];
            BYTE b = hex[i+1];
            Outbuff[i/2] = (HexChar[a] << 4)+HexChar[b];
        }
    }

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  • 原文地址:https://www.cnblogs.com/mtcnn/p/9410055.html
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