slepc-3.14.0 2020-09-30
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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 on rg

Input Parameters

rg  - the region context
a,b  - endpoints of the interval in the real axis
c,d  - endpoints 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()

Location: src/sys/classes/rg/impls/interval/rginterval.c

Examples

src/eps/tutorials/ex30.c.html
src/nep/tutorials/ex27.c.html
src/nep/tutorials/ex42.c.html
src/nep/tutorials/ex27f90.F90.html

Index of all RG routines
Table of Contents for all manual pages
Index of all manual pages