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view +blockmatrix/isDivision.m @ 1134:7259b3f3e227 feature/laplace_curvilinear_test

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Make LaplaceCurvilinear work for coeff a and b that are scalar, grid functions, or function handles.
author Martin Almquist <malmquist@stanford.edu>
date Mon, 27 May 2019 16:53:32 -0700
parents a5f1b0267dba
children
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function b = isDivision(div)
    % Make sure it is a cellarray
    if ~iscell(div)
        b = false;
        return
    end

    % Make sure it has the right shape
    if numel(div) ~= 2
        b = false;
        return
    end

    if ~isDivisionVector(div{1}) || ~isDivisionVector(div{2})
        b = false;
        return
    end

    b = true;
end

function b = isDivisionVector(v)
    if isempty(v)
        b = true;
        return
    end

    if any(v < 0)
        b = false;
        return
    end

    b = true;
end