% addone.m
% "adds one" to the current vector
%
% inv = input vector

function r = addone (inv)
r = inv;
foo = size(r);
n = foo(2); % this is the "width" of the input vector
c = 0; % this is to check if there's a problem.  0 means there is
position = 1;
while position <= n
    if r(position) == 0
        r = flipbit(r,position);
        position = n+1; % so that the while loop ends
        c = 1;
    elseif r(position) == 1
        r = flipbit(r,position);
        position = position+1;
    end
end