Signed Multiplication

[amaneureka]

1111111100000000000000000000000000000000 := -1.000000
0000000000010011001011111101101110001111 :=  0.074949

This on returns wrong output: 0000000000110001000101100110010110011001
Right answer:

1111111111101100110100000010010001110001 := -0.074949