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pbdBASE (version 0.5-3)

base.rpdsyevx: rpdsyevx

Description

Genearlized eigenvalue problem.

Usage

base.rpdsyevx(
  jobz,
  range,
  n,
  a,
  desca,
  vl,
  vu,
  il,
  iu,
  abstol = 1e-08,
  orfac = 0.001
)

Arguments

jobz

Control for if vectors/values/both are returned.

range

Parameter to determine the search criteria for eigenvalues.

n

Problem size.

a

Matrix.

desca

ScaLAPACK descriptor array.

vl, vu

Endpoints of the interval subset of the real line in which to search for eigenvalues, if specified by range.

il, iu

Eigenvalues with indices il, ..., iu will be found, if specified by range.

abstol

Absolute error tolerance for the eigenvalues.

orfac

Eigenvectors with eigenvalues below orfac*norm(a) of each other are reorthogonalized.

Details

For advanced users only. See pbdDMAT for high-level functions.