MATLAB: Loop runs infinitely,

random number generatorwhile loop

% member ship value taken by zeros initilization
U=zeros(2,3);
% **********************************************

%    each row is randomly initialize and 
%                  must be 1 [ i.e., summation of complete row value]
% **********************************************
for i=1:2
%     for each i is 1 to 2, iteratively increased row
    while(1) 
        total=0;
        for j=1:3            
            U(i,j)=rand();
            % generaly random value is less than one
            total=total+U(i,j);
            % each row, every colomn value is added to variable 'total'
        end
        if (total == 1)
            % check value is equal to one or not,example total=1.1235
            % then total considers as 1 but my point is exact total
            % varible must be 'one'
            break;
        end
    end       
end 
disp(U);
loop runs infinite so that please describe how to stop it

Best Answer

Since total is random numbers, it will never equal exactly 1, so see if it exceeds 1 instead
if total >= 1
Of check within a tolerance
if abs(total-1) < someSmallNumber
Please read the FAQ for more info: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F
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