slepc-main 2024-11-15
RGIntervalSetEndpoints
Sets the parameters defining the interval region.
Synopsis
#include "slepcrg.h"
PetscErrorCode RGIntervalSetEndpoints(RG rg,PetscReal a,PetscReal b,PetscReal c,PetscReal d)
Logically Collective
Input Parameters
| rg | - the region context
|
| a | - left endpoint of the interval in the real axis
|
| b | - right endpoint of the interval in the real axis
|
| c | - bottom endpoint of the interval in the imaginary axis
|
| d | - top endpoint of the interval in the imaginary axis
|
Options Database Keys
| -rg_interval_endpoints | - the four endpoints
|
Note
The region is defined as [a,b]x[c,d]. Particular cases are an interval on
the real axis (c=d=0), similar for the imaginary axis (a=b=0), the whole
complex plane (a=-inf,b=inf,c=-inf,d=inf), and so on.
When PETSc is built with real scalars, the region must be symmetric with
respect to the real axis.
See Also
RGIntervalGetEndpoints()
Level
advanced
Location
src/sys/classes/rg/impls/interval/rginterval.c
Examples
src/eps/tutorials/ex30.c
src/nep/tutorials/ex27.c
src/nep/tutorials/ex27f.F90
src/nep/tutorials/ex42.c
Index of all RG routines
Table of Contents for all manual pages
Index of all manual pages