QEPSetScaleFactor
Sets the scaling factor to be used for scaling the quadratic problem before attempting to solve.
Synopsis
#include "slepcqep.h"
PetscErrorCode QEPSetScaleFactor(QEP qep,PetscReal alpha)
Collective on QEP
Input Parameters
| qep | - the quadratic eigensolver context
|
| alpha | - the scaling factor
|
Options Database Keys
-qep_scale <alpha> - Sets the scaling factor
Notes
For the problem (l^2*M + l*C + K)*x = 0, the effect of scaling is to work
with matrices (alpha^2*M, alpha*C, K), then scale the computed eigenvalue.
The default is to scale with alpha = norm(K)/norm(M).
See Also
QEPGetScaleFactor()
Location: src/qep/interface/qepopts.c
Index of all QEP routines
Table of Contents for all manual pages
Index of all manual pages