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view semiDefIneq.m @ 834:f1f0bf087e1c feature/burgers1d

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Add support for artificial viscosity - Add option to use upwind operators for discretizing the scheme - Add option to use dissipation operators constructed from undivided differences when discretizing with narrow stencil operators
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Thu, 13 Sep 2018 14:21:47 +0200
parents eaf557023fbe
children
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function ineq = semiDefIneq(A, verbose)
    default_arg('verbose', true);
    [m, sub] = minors(A, verbose);

    ineqsys = true;
    for i = 1:length(m)
        ineqsys = ineqsys & m(i) >= 0;
    end

    ineq = simplify(ineqsys);

    str = toString(ineq);
    fprintf('%s\n',strjoin(strsplit(str,' & '), '\n'));
end