Genesis Hash using uint256

if(genesis.GetHash() != uint256("0x"))
    	{
            printf("Searching for genesis block...\n");
            uint256 hashTarget = CBigNum().SetCompact(genesis.nBits).getuint256();
            while(uint256(genesis.GetHash()) > hashTarget)
            {
                ++genesis.nNonce;
                if (genesis.nNonce == 0)
                {
                    printf("NONCE WRAPPED, incrementing time");
                    std::cout << std::string("NONCE WRAPPED, incrementing time:\n");
                    ++genesis.nTime;
                }
                if (genesis.nNonce % 10000 == 0)
                {
                    printf("Mainnet: nonce %08u: hash = %s \n", genesis.nNonce, genesis.GetHash().ToString().c_str());
                }
            }
            printf("block.nTime = %u \n", genesis.nTime);
            printf("block.nNonce = %u \n", genesis.nNonce);
            printf("block.GetHash = %s\n", genesis.GetHash().ToString().c_str());
        }