slepc-3.5.2 2014-10-10
PEPComputeResidualNorm
Computes the norm of the residual vector associated with the i-th computed eigenpair.
Synopsis
#include "slepcpep.h"
PetscErrorCode PEPComputeResidualNorm(PEP pep,PetscInt i,PetscReal *norm)
Collective on PEP
Input Parameter
| pep | - the polynomial eigensolver context
|
| i | - the solution index
|
Output Parameter
norm - the residual norm, computed as ||P(l)x||_2 where l is the
eigenvalue and x is the eigenvector.
Notes
The index i should be a value between 0 and nconv-1 (see PEPGetConverged()).
Eigenpairs are indexed according to the ordering criterion established
with PEPSetWhichEigenpairs().
See Also
PEPSolve(), PEPGetConverged(), PEPSetWhichEigenpairs()
Location: src/pep/interface/pepsolve.c
Index of all PEP routines
Table of Contents for all manual pages
Index of all manual pages