slepc-3.21.0 2024-03-30
RGComputeQuadrature
Computes the values of the parameters used in a quadrature rule for a contour integral around the boundary of the region.
Synopsis
#include "slepcrg.h"
PetscErrorCode RGComputeQuadrature(RG rg,RGQuadRule quad,PetscInt n,PetscScalar z[],PetscScalar zn[],PetscScalar w[])
Not Collective
Input Parameters
| rg | - the region context
|
| quad | - the type of quadrature
|
| n | - number of quadrature points to compute
|
Output Parameters
| z | - quadrature points
|
| zn | - normalized quadrature points
|
| w | - quadrature weights
|
Notes
In complex scalars, the values returned in z are often the same as those
computed by RGComputeContour(), but this is not the case in real scalars
where all output arguments are real.
The computed values change for different quadrature rules (trapezoidal
or Chebyshev).
See Also
RGComputeContour()
Level
intermediate
Location
src/sys/classes/rg/interface/rgbasic.c
Index of all RG routines
Table of Contents for all manual pages
Index of all manual pages