lis_esolver_get_residualnorm(3)

NAME
lis_esolver_get_residualnorm - calculate the relative residual norm from the eigenvector

SYNOPSIS
#include "lis.h" LIS_INT lis_esolver_get_residualnorm(LIS_ESOLVER esolver, LIS_INT *residual);

DESCRIPTION
Calculate the relative residual norm ||lx - Ax||_2/l from the eigenvector x.

INPUT

esolver
    The eigensolver

OUTPUT

residual
    The relative residual norm ||lx - Ax||_2/l

EXIT STATUS
The following exit values are returned:

0   The process is normally terminated

unspecified
    An error occurred

SEE ALSO
lis(3)

http://www.ssisc.org/lis/