slepc-3.7.4 2017-05-17
   
DSSetRefined
Sets a flag to indicate that refined vectors must be computed. 
Synopsis
#include "slepcds.h" 
PetscErrorCode DSSetRefined(DS ds,PetscBool ref)
Logically Collective on DS
Input Parameter
|  | ds | - the direct solver context | 
|  | ref | - a boolean flag | 
Notes
Normally the vectors returned in DS_MAT_X are eigenvectors of the
projected matrix. With this flag activated, DSVectors() will return
the right singular vector of the smallest singular value of matrix
\tilde{A}-theta*I, where \tilde{A} is the extended (n+1)xn matrix
and theta is the Ritz value. This is used in the refined Ritz
approximation.
The default is PETSC_FALSE.
See Also
 DSVectors(), DSGetRefined()
Location: src/sys/classes/ds/interface/dsbasic.c
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages