slepc-3.16.1 2021-11-17
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RGComputeBoundingBox

Determines the endpoints of a rectangle in the complex plane that contains the region.

Synopsis

#include "slepcrg.h" 
PetscErrorCode RGComputeBoundingBox(RG rg,PetscReal *a,PetscReal *b,PetscReal *c,PetscReal *d)
Not Collective

Input Parameter

rg  - the region context

Output Parameters

a  - left endpoint of the bounding box in the real axis
b  - right endpoint of the bounding box in the real axis
c  - bottom endpoint of the bounding box in the imaginary axis
d  - top endpoint of the bounding box in the imaginary axis

Notes

The bounding box is defined as [a,b]x[c,d]. In regions that are not bounded (e.g. an open interval) or with the complement flag set, it makes no sense to compute a bounding box, so the return values are infinite.

See Also

RGSetComplement()

Location: src/sys/classes/rg/rgbasic.c
Index of all RG routines
Table of Contents for all manual pages
Index of all manual pages