EPSGetWhichEigenpairs

Returns which portion of the spectrum is to be sought.

Synopsis

#include "slepceps.h" 
int EPSGetWhichEigenpairs(EPS eps,EPSWhich *which) 
Not Collective

Input Parameter

eps -eigensolver context obtained from EPSCreate()

Output Parameter

which -the portion of the spectrum to be sought

Possible values

The parameter 'which' can have one of these values

EPS_LARGEST_MAGNITUDE - largest eigenvalues in magnitude (default)
EPS_SMALLEST_MAGNITUDE - smallest eigenvalues in magnitude
EPS_LARGEST_ALGEBRAIC - largest (algebraic) eigenvalues
EPS_SMALLEST_ALGEBRAIC - smallest (algebraic) eigenvalues
EPS_LARGEST_REAL - largest real parts
EPS_SMALLEST_REAL - smallest real parts
EPS_LARGEST_IMAGINARY - largest imaginary parts
EPS_SMALLEST_IMAGINARY - smallest imaginary parts
EPS_BOTH_ENDS - eigenvalues from both ends of the spectrum (Hermitian case)

See Also

EPSSetWhichEigenpairs()

Level:intermediate
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages