object SymmetricQRstep extends Eigen with Error
The SymmetricQRstep object performs a symmetric 'QR' step with a Wilkinson shift.
- See also
Algorithm 8.3.2 in Matrix Computations.
http://people.inf.ethz.ch/arbenz/ewp/Lnotes/chapter3.pdf (Algorithm 3.6)
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Show the flaw by printing the error message.
Show the flaw by printing the error message.
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the error message
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- def qRStep(t: SymTriMatrixD, p: Int, q: Int): Unit
Apply a 'QR' reduction step to matrix 't'.
Apply a 'QR' reduction step to matrix 't'.
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the unreduced symmetric tridiagonal matrix
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the row index
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the column index
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