function [ c ] = add8_401( a, b )
a = uint16(a);
b = uint16(b);
c = 0;
n2 = bitand(bitshift(a, -1), 1, 'uint16');
n4 = bitand(bitshift(a, -2), 1, 'uint16');
n6 = bitand(bitshift(a, -3), 1, 'uint16');
n8 = bitand(bitshift(a, -4), 1, 'uint16');
n10 = bitand(bitshift(a, -5), 1, 'uint16');
n12 = bitand(bitshift(a, -6), 1, 'uint16');
n14 = bitand(bitshift(a, -7), 1, 'uint16');
n20 = bitand(bitshift(b, -2), 1, 'uint16');
n22 = bitand(bitshift(b, -3), 1, 'uint16');
n24 = bitand(bitshift(b, -4), 1, 'uint16');
n26 = bitand(bitshift(b, -5), 1, 'uint16');
n28 = bitand(bitshift(b, -6), 1, 'uint16');
n30 = bitand(bitshift(b, -7), 1, 'uint16');
n32 = bitxor(n28, n12);
n36 = bitor(n24, n8);
n43 = bitcmp(bitxor(n2, n2));
n49 = bitor(n4, n20);
n62 = bitxor(n6, n22);
n63 = bitand(n6, n22);
n72 = bitxor(n8, n24);
n73 = bitand(n8, n24);
n82 = bitxor(n10, n26);
n83 = bitand(n10, n26);
n92 = bitxor(n12, n28);
n93 = bitand(n12, n28);
n94 = n83;
n102 = bitxor(n14, n30);
n103 = bitand(n14, n30);
n143 = bitand(n36, n63);
n162 = bitor(n73, n143);
n163 = bitor(n73, n143);
n168 = n82;
n169 = n82;
n173 = bitand(n32, n94);
n182 = bitand(n32, n169);
n193 = bitor(n93, n173);
n223 = bitand(n182, n163);
n230 = n162;
n242 = bitor(n193, n223);
n263 = n230;
n322 = n143;
n332 = bitand(n168, n263);
n342 = bitor(n94, n332);
n382 = bitxor(n72, n322);
n392 = bitxor(n168, n263);
n402 = bitxor(n92, n342);
n412 = bitxor(n102, n242);
n413 = bitand(n102, n242);
n423 = bitor(n103, n413);
c = bitor(c, bitshift(bitand(n20, 1), 0));
c = bitor(c, bitshift(bitand(n49, 1), 1));
c = bitor(c, bitshift(bitand(n43, 1), 2));
c = bitor(c, bitshift(bitand(n62, 1), 3));
c = bitor(c, bitshift(bitand(n382, 1), 4));
c = bitor(c, bitshift(bitand(n392, 1), 5));
c = bitor(c, bitshift(bitand(n402, 1), 6));
c = bitor(c, bitshift(bitand(n412, 1), 7));
c = bitor(c, bitshift(bitand(n423, 1), 8));
end