smod_arpack_shift_invert – Legolas v. 2.2.1

Module containing the implementation for the ARPACK shift-invert-type solver, that is, given the general eigenvalue problem $AX = \omega BX,$ choose a shift $\sigma$ and solve the problem $(A - \sigma B)X = \omega X,$ thereby finding $k$ eigenvalues of the shifted problem that satisfy a given criterion.

Uses

- Ancestors:
- mod_solvers
- :
- smod_arpack_main

Module Procedures

module procedure /home/runner/work/legolas/legolas/docs/ford/module/smod_arpack_shift_invert.html solve_arpack_shift_invert module subroutine solve_arpack_shift_invert(arpack_cfg, matrix_A, matrix_B, settings, omega, vr)

Implementation of the ARPACK shift-invert solver

Arguments

Type	Intent		Name
type(arpack_t),	intent(in)	::	arpack_cfg	arpack configuration
type(matrix_t),	intent(in)	::	matrix_A	matrix A
type(matrix_t),	intent(in)	::	matrix_B	matrix B
type(settings_t),	intent(in)	::	settings	settings object
complex(kind=dp),	intent(out)	::	omega(:)	array with eigenvalues
complex(kind=dp),	intent(out)	::	vr(:,:)	array with right eigenvectors

smod_arpack_shift_invert Submodule

Contents

Module Procedures

Uses

Ancestors:

Module Procedures

module procedure /home/runner/work/legolas/legolas/docs/ford/module/smod_arpack_shift_invert.html solve_arpack_shift_invert module subroutine solve_arpack_shift_invert(arpack_cfg, matrix_A, matrix_B, settings, omega, vr)

Arguments

smod_arpack_shift_invert Submodule

Contents

Module Procedures

Uses

Ancestors:

Module Procedures

module procedure /home/runner/work/legolas/legolas/docs/ford/module/smod_arpack_shift_invert.html solve_arpack_shift_invert module subroutine solve_arpack_shift_invert(arpack_cfg, matrix_A, matrix_B, settings, omega, vr) Interface →

Arguments

module procedure /home/runner/work/legolas/legolas/docs/ford/module/smod_arpack_shift_invert.html solve_arpack_shift_invert module subroutine solve_arpack_shift_invert(arpack_cfg, matrix_A, matrix_B, settings, omega, vr)