petsc-3.12.5 2020-03-29
PetscDTGaussQuadrature
create Gauss quadrature
Synopsis
#include "petscdt.h"
PetscErrorCode PetscDTGaussQuadrature(PetscInt npoints,PetscReal a,PetscReal b,PetscReal *x,PetscReal *w)
Not Collective
Input Arguments
| npoints | - number of points
|
| a | - left end of interval (often-1)
|
| b | - right end of interval (often +1)
|
Output Arguments
| x | - quadrature points
|
| w | - quadrature weights
|
References
1. -Golub and Welsch, Calculation of Quadrature Rules, Math. Comp. 23(106), 1969.
See Also
PetscDTLegendreEval()
Level
intermediate
Location
src/dm/dt/interface/dt.c
Examples
src/ksp/ksp/examples/tutorials/ex74.c.html
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages