Error in converting decimal to binary

    a=[-5;5]
    b=dec2bin(2^4+a);

    b =

    01011
    10101

I get error for 5

    b= dec2bin(mod(2^6+a,2^6))

I get

    111011
    000101

Why do I get values like this and where is the error made?

i have values like a=[-145 1 -2 10 199 51 -4]

Answer 1

[Doug Hull]

>> a = [-5; 5];
middle = 2^4+a
dec2bin(middle)

middle =

      11
      21

ans =

01011
10101

I suspect that middle is not what you expected it to be.

[Pat]

yes why i get like this ,

[Pat]

how to convert a=[-145 1 -2 10 199 51 -4] to binary,

[Walter Roberson]

There are three distinct common ways to represent negative numbers in binary. You need to choose: separate sign; one's complement; two's complement.