NEPComputeResidualNorm

Computes the norm of the residual vector associated with the i-th computed eigenpair.

Synopsis

#include "slepcnep.h" 
PetscErrorCode NEPComputeResidualNorm(NEP nep,PetscInt i,PetscReal *norm)
Collective on NEP

Input Parameter

nep - the nonlinear eigensolver context
i - the solution index

Output Parameter

norm - the residual norm, computed as ||T(lambda)x||_2 where lambda is the eigenvalue and x is the eigenvector.

Notes

The index i should be a value between 0 and nconv-1 (see NEPGetConverged()). Eigenpairs are indexed according to the ordering criterion established with NEPSetWhichEigenpairs().

See Also

NEPSolve(), NEPGetConverged(), NEPSetWhichEigenpairs()

Location: src/nep/interface/nepsolve.c
Index of all NEP routines
Table of Contents for all manual pages
Index of all manual pages