petsc-master 2020-05-26
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PetscFEComputeTabulation

Tabulates the basis functions, and perhaps derivatives, at the points provided.

Synopsis

#include "petscfe.h" 
PetscErrorCode PetscFEComputeTabulation(PetscFE fem, PetscInt npoints, const PetscReal points[], PetscInt K, PetscTabulation T)
Not collective

Input Parameters

fem - The PetscFE object
npoints - The number of tabulation points
points - The tabulation point coordinates
K - The number of derivatives calculated
T - An existing tabulation object with enough allocated space

Output Parameter

T -The basis function values and derivatives at tabulation points

Note

T->T[0] = B[(p*pdim + i)*Nc + c] is the value at point p for basis function i and component c
T->T[1] = D[((p*pdim + i)*Nc + c)*dim + d] is the derivative value at point p for basis function i, component c, in direction d
T->T[2] = 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

PetscFEGetCellTabulation(), PetscTabulationDestroy()

Level

intermediate

Location

src/dm/dt/fe/interface/fe.c
Index of all FE routines
Table of Contents for all manual pages
Index of all manual pages