BitCoinClient.Worker.sha256_block_data_order C# (CSharp) Method

        void sha256_block_data_order(uint[] output, uint[] state, uint[] input)
        {
            uint[] X = new uint[16];
            int i;

            uint a = state[0];
            uint b = state[1];
            uint c = state[2];
            uint d = state[3];
            uint e = state[4];
            uint f = state[5];
            uint g = state[6];
            uint h = state[7];

            for (i=0;i<16;i++)
            {
                uint T1 = X[i] = input[i];
                T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];
                uint T2 = Sigma0(a) + Maj(a, b, c);
                h = g; g = f; f = e; e = d + T1;
                d = c; c = b; b = a; a = T1 + T2;
            }

            for (;i<64;i++)
            {
                uint s0 = X[(i+1)&0x0f];
                s0 = sigma0(s0);
                uint s1 = X[(i+14)&0x0f];
                s1 = sigma1(s1);

                X[i & 0xf] += s0 + s1 + X[(i + 9) & 0xf];
                uint T1 = X[i & 0xf];
                T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];

                uint T2 = Sigma0(a) + Maj(a, b, c);
                h = g; g = f; f = e; e = d + T1;
                d = c; c = b; b = a; a = T1 + T2;
            }

            output[0] = (state[0] + a);
            output[1] = (state[1] + b);
            output[2] = (state[2] + c);
            output[3] = (state[3] + d);
            output[4] = (state[4] + e);
            output[5] = (state[5] + f);
            output[6] = (state[6] + g);
            output[7] = (state[7] + h);
        }