Adding 2 big interger, e.g 100 digits

% Add 2 big INTERGER a b, e.g with 100 digits % algorithms will add each group of nbit digits

% Add 2 big INTERGER a b, e.g with 100 digits
% algorithms will add each group of nbit digits
% of a and b. nbit(default)=6
% S = add(a,b), return S = a+b
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% Example
% na = 3+ round(10*rand);
% nb =5+ round(10*rand);
% a = round(10^na*rand)
% b = round(10^nb*rand)
% s = add(a,b)
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% [e-mail]
% 9-27-2011
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