strange conversion!

[navid]

hi

this is code:

void test(void)
{
    QByteArray _qba;
    _qba.clear();
    int index=0;
    unsigned char hi,lo;
    unsigned int uin,u32r;
    bool br;
    for(int i=0; i<dock->tableWidget->rowCount(); i++){
        u32r=dock->tableWidget->item(i,2)->text().toUInt(&br);
        qDebug()<<"["<<u32r<<"]";
        if(!br)return;
        hi=(unsigned char)(u32r/ 256);
        lo=(unsigned char)(u32r % 256);
        _qba.append(hi);
        _qba.append(lo);
        qDebug()<<"("<<(unsigned char)_qba.data()[index]<<","<<(unsigned char)_qba.data()[index+1]<<")";
        uin=(unsigned int)(_qba.data()[index]*256+_qba.data()[index+1]);
        index+=2; 
        uin &= 0x0000ffff;
        qDebug()<<uin; 
        qDebug()<<"{"<<hi*256+lo<<"}";
     }
}

void test(void)
{
    QByteArray _qba;
    _qba.clear();
    int index=0;
    unsigned char hi,lo;
    unsigned int uin,u32r;
    bool br;
    for(int i=0; i<dock->tableWidget->rowCount(); i++){
        u32r=dock->tableWidget->item(i,2)->text().toUInt(&br);
        qDebug()<<"["<<u32r<<"]";
        if(!br)return;
        hi=(unsigned char)(u32r/ 256);
        lo=(unsigned char)(u32r % 256);
        _qba.append(hi);
        _qba.append(lo);
        qDebug()<<"("<<(unsigned char)_qba.data()[index]<<","<<(unsigned char)_qba.data()[index+1]<<")";
        uin=(unsigned int)(_qba.data()[index]*256+_qba.data()[index+1]);
        index+=2; 
        uin &= 0x0000ffff;
        qDebug()<<uin; 
        qDebug()<<"{"<<hi*256+lo<<"}";
     }
}

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this is debug:
[ 100 ]
( 0 , 100 )
100
{ 100 }
[ 350 ]
( 1 , 94 )
350
{ 350 }
[ 1400 ]
( 5 , 120 )
1400
{ 1400 }
[ 36344 ]
( 141 , 248 )
36088
{ 36344 }
[ 62000 ]
( 242 , 48 )
62000
{ 62000 }
[ 58344 ]
( 227 , 232 )
58088
{ 58344 }
[ 0 ]
( 0 , 0 )
0
{ 0 }


why there is strange conversion for some ones:
[ 36344 ]
( 141 , 248 )
36088
{ 36344 }

also, using qDebug()<<(int)uin; produce same result!