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annotate +blockmatrix/multiply.m @ 1015:9b7fcd5e4480 feature/advectionRV

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Debug ResidualViscosity - Pass exact time derivative to RungeKuttaExteriorRV and use that for evaluating the residual - Start bootstrapping from later time level with higher order bdf
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Thu, 06 Dec 2018 17:03:22 +0100
parents 288138d9586d
children
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288138d9586d Add function to multiply blockmatrices.
Jonatan Werpers <jonatan@werpers.com>
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1 function C = multiply(A, B)
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2 [n_a, m_a] = size(A);
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3 [n_b, m_b] = size(B);
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5 assert(m_a == n_b, 'Dimensions do not agree.')
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7 C = cell(n_a, m_b);
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9 for i = 1:n_a
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10 for j = 1:m_b
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11 C{i,j} = sparse(size(A{i,1},1), size(B{1,j},2));
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12 for k = 1:n_b
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13 C{i,j} = C{i,j} + A{i,k}*B{k,j};
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