I want to add two binary numbers 11111101 and 0.1000, please help me..

i tried number of functions but m not able to add these to numbers

[per isakson]

    >> bin2dec('11111101')+0.1
    ans =
      253.1000

[Tom Rauber]

253.1000 is not correct, if 0.1000 is a binary number.

0.1 as a binary number means 2^(-1) = 0.5.

Hence the correct answer is 253.5

Answer 1

[Stephen23]

>> binf2dec('11111101')+binf2dec('0.1')
ans =
        253.5

Where

function dec = binf2dec(bin)
tkn = regexp(bin,'^([01]+)\.?([01]*)$','tokens','once');
vec = [tkn{:}]-'0';
dec = sum(vec.*pow2((numel(vec):-1:1)-1-numel(tkn{2})));
end