MATLAB: How to Add Two Sign Magnitude Numbers

additionbinary addersign magnitude

Hi all, anyone have the idea of how to add two sign magnitude numbers? Well, I think about binary adder but I just get confused about the sign and handling the overflow. Any advice?

Thank you.

Best Answer

binary adders are fine if you have binary input, but they are not very good if you are, for example, using Variable Base Arithmetic such as times represented in hours minutes and seconds.

Before you can design an addition routine for the numbers, you are going to need to define the properties of the source representations and of the desired output representations.

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MATLAB: From excel file 12-bit binary signed numbers to decimal values into matlab

It's easier if you force matlab to read these numbers as text:

fid = fopen('data.csv');
text = textscan(fid, '%s%s', 'Delimiter', ',');   %read as text
fclose(fid);
text = [text{:}];  %concatenate as a Nx2 cell array
digits = cellfun(@(t) t-'0', text, 'UniformOutput', false);  %convert char vector of '0' and '1' into double vector of 0 and 1
numbers = cellfun(@(d) (-1)^d(1) * polyval(d(2:end), 2), digits);  %convert binary digits into actual number

A more efficient algorithm would concatenate the text as a 3D char array and permute the dimensions at the end instead of processing cell arrays.

MATLAB: Fixed Point to Floating Point

   >> doc fi
   >> doc numerictype
   >> doc fimath
   >> doc cast
   >> doc isfi

Best Answer

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MATLAB: From excel file 12-bit binary signed numbers to decimal values into matlab

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