ScaMaC  0.8.2
A Scalable Matrix Collection
Functions
scamac_lanczos.h File Reference

Compute (approximate) bounds on the spectrum. More...

#include "scamac_matop.h"
#include "scamac_generator.h"

Go to the source code of this file.

Functions

ScamacErrorCode scamac_lanczos_ev (const ScamacMatop *sm, double tol, double *ev1, double *ev2, double *eps1, double *eps2)
 Lanczos for extremal eigenvalues of sparse matrix.
 
ScamacErrorCode scamac_lanczos_ev_real (const ScamacMatop *sm, double tol, double *ev1, double *ev2, double *eps1, double *eps2)
 Lanczos for extremal eigenvalues of real (symmetric) matrix (computational routine)
 
ScamacErrorCode scamac_lanczos_ev_cplx (const ScamacMatop *sm, double tol, double *ev1, double *ev2, double *eps1, double *eps2)
 Lanczos for extremal eigenvalues of complex (hermitian) matrix (computational routine)
 

Detailed Description

Compute (approximate) bounds on the spectrum.

Author
Andreas Alvermann (University of Greifswald)
Date
October 2017 — today