function r = eq(p,q)
% this function compares the equality condition of x, y, and z values of the structures that I use in
% the FVtool.
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% SYNOPSIS:
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% PARAMETERS:
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% RETURNS:
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% EXAMPLE:
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% SEE ALSO:
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% Copyright (c) 2012-2016 Ali Akbar Eftekhari
% See the license file

if (isa(p, 'CellVariable')&&isa(q, 'CellVariable'))
    r=p;
    r.value = p.value==q.value;
elseif isa(p, 'CellVariable')
    r=p;
    r.value = p.value==q;
else
    r=q;
    r.value = p==q.value;
end
