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view +blockmatrix/isDivision.m @ 1172:9dd10dcff128 feature/rv

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Dont return penalty terms from operators on coarse grid. One can use the penalty terms constructed for the fine grid
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 28 Jun 2019 13:22:03 +0200
parents a5f1b0267dba
children
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line source

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