PETSc version 3.15.5
PetscGaussLobattoLegendreElementGradientCreate
computes the gradient for a single 1d GLL element 
Synopsis
#include "petscdt.h" 
PetscErrorCode PetscGaussLobattoLegendreElementGradientCreate(PetscInt n,PetscReal *nodes,PetscReal *weights,PetscReal ***AA,PetscReal ***AAT)
Not Collective
Input Parameter
|  | n | - the number of GLL nodes | 
|  | nodes | - the GLL nodes | 
|  | weights | - the GLL weights | 
Output Parameter
|  | AA | - the stiffness element | 
|  | AAT | - the transpose of AA (pass in NULL if you do not need this array) | 
Notes
Destroy this with PetscGaussLobattoLegendreElementGradientDestroy()
You can access entries in these arrays with AA[i][j] but in memory it is stored in contiguous memory, row oriented
See Also
 PetscDTGaussLobattoLegendreQuadrature(), PetscGaussLobattoLegendreElementLaplacianDestroy()
Level
beginner
Location
src/dm/dt/interface/dt.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages