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annotate toolboxes/FullBNT-1.0.7/KPMtools/isposdef.m @ 0:cc4b1211e677 tip

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initial commit to HG from Changeset: 646 (e263d8a21543) added further path and more save "camirversion.m"
author Daniel Wolff
date Fri, 19 Aug 2016 13:07:06 +0200
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Daniel@0 1 function b = isposdef(a)
Daniel@0 2 % ISPOSDEF Test for positive definite matrix.
Daniel@0 3 % ISPOSDEF(A) returns 1 if A is positive definite, 0 otherwise.
Daniel@0 4 % Using chol is much more efficient than computing eigenvectors.
Daniel@0 5
Daniel@0 6 % From Tom Minka's lightspeed toolbox
Daniel@0 7
Daniel@0 8 [R,p] = chol(a);
Daniel@0 9 b = (p == 0);