petsc-3.12.5 2020-03-29
PetscFEGetTabulation
Tabulates the basis functions, and perhaps derivatives, at the points provided.
Synopsis
#include "petscfe.h"
PetscErrorCode PetscFEGetTabulation(PetscFE fem, PetscInt npoints, const PetscReal points[], PetscReal **B, PetscReal **D, PetscReal **H)
Not collective
Input Parameters
| fem | - The PetscFE object
|
| npoints | - The number of tabulation points
|
| points | - The tabulation point coordinates
|
Output Parameters
| B | - The basis function values at tabulation points
|
| D | - The basis function derivatives at tabulation points
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| H | - The basis function second derivatives at tabulation points
|
Note
B[(p*pdim + i)*Nc + c] is the value at point p for basis function i and component c
D[((p*pdim + i)*Nc + c)*dim + d] is the derivative value at point p for basis function i, component c, in direction d
H[(((p*pdim + i)*Nc + c)*dim + d)*dim + e] is the value at point p for basis function i, component c, in directions d and e
See Also
PetscFERestoreTabulation(), PetscFEGetDefaultTabulation()
Level
intermediate
Location
src/dm/dt/fe/interface/fe.c
Implementations
PetscFEGetTabulation_Basic in src/dm/dt/fe/impls/basic/febasic.c
PetscFEGetTabulation_Composite in src/dm/dt/fe/impls/composite/fecomposite.c
src/dm/dt/fe/impls/opencl/feopencl.c:776:PETSC_EXTERN PetscErrorCode PetscFEGetTabulation_Basic(PetscFE, PetscInt, const PetscReal [],
Index of all FE routines
Table of Contents for all manual pages
Index of all manual pages