EPSComputeRelativeError

Computes the actual relative error associated with the i-th converged approximate eigenpair.

Synopsis

#include "slepceps.h" 
PetscErrorCode EPSComputeRelativeError(EPS eps, int i, PetscReal *error)
Collective on EPS

Input Parameter

eps -the eigensolver context
i -the solution index

Output Parameter

error -the relative error, computed as ||Ax-kBx||/||kx|| where k is the eigenvalue and x is the eigenvector. If k=0 the relative error is computed as ||Ax||/||x||.

See Also

EPSSolve(), EPSComputeResidualNorm()

Level:beginner
Location:
src/eps/interface/solve.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/examples/ex1.c.html
src/examples/ex2.c.html
src/examples/ex3.c.html
src/examples/ex4.c.html
src/examples/ex5.c.html
src/examples/ex7.c.html
src/examples/ex9.c.html
src/examples/ex10.c.html
src/examples/ex11.c.html
src/examples/ex1f.F.html
src/examples/ex6f.F.html