Computes the splitting points with the given threshold.
Utility methods for computing bounds of eigenvalues.
Counts the number of eigenvalues in a symmetric tridiagonal matrix T that are less than a given value x.
Finds the number of eigenvalues of the symmetric tridiagonal matrix T that are in a given interval.
Represents a L D LT decomposition of a shifted symmetric tridiagonal matrix T.
Decomposes (T - σ I) into L D LT where T is a symmetric tridiagonal matrix, σ is a shift for this factorization, L is a unit lower triangular matrix, and D is a diagonal matrix.
Computes eigenvalues and eigenvectors of a given symmetric tridiagonal matrix T using "Algorithm of Multiple Relatively Robust Representations" (MRRR).
Computes the Sturm count, the number of negative pivots encountered while factoring tridiagonal T - σ I = LDLT.
Computes eigen decomposition for a symmetric matrix using "Algorithm of Multiple Relatively Robust Representations" (MRRR).
Computes the eigen decomposition of a 2-by-2 symmetric matrix in the following form by symmetric QR algorithm.
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