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view spdiag.m @ 699:8f1eae1450b2 feature/optim

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sign change on hamiltonian
author Ylva Rydin <ylva.rydin@telia.com>
date Mon, 16 Oct 2017 14:52:15 +0200
parents 9c0192cf099f
children 8e0067aef5b0
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function A = spdiag(a,i)
    default_arg('i',0);
    n = length(a)-abs(i);
    A = spdiags(a,i,n,n);
end