Checks if a matrix is positive definite and/or forces a matrix to be positive definite.
a square numeric matrix.
isPositiveDefinite checks if a square
matrix is positive definite.
a matrix to be positive definite.
These functions were originally implimented in fUtilities Copyright: (c) 1999-2008 Diethelm Wuertz and Rmetrics Foundation URL: http://www.rmetrics.org
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