slepc-main 2024-11-15
STFilterSetRange
Defines the numerical range (or field of values) of the matrix, that is, the interval containing all eigenvalues.
Synopsis
#include "slepcst.h"
PetscErrorCode STFilterSetRange(ST st,PetscReal left,PetscReal right)
Logically Collective
Input Parameters
| st | - the spectral transformation context
|
| left | - left end of the interval
|
| right | - right end of the interval
|
Options Database Key
| -st_filter_range <a,b> | - set [a,b] as the numerical range
|
Notes
The filter will be most effective if the numerical range is tight, that is, left and right
are good approximations to the leftmost and rightmost eigenvalues, respectively.
See Also
STFilterGetRange(), STFilterSetInterval()
Level
intermediate
Location
src/sys/classes/st/impls/filter/filter.c
Index of all ST routines
Table of Contents for all manual pages
Index of all manual pages