PetscSpaceEvaluate

Evaluate the basis functions and their derivatives (jet) at each point

Synopsis

#include "petscfe.h"  
PetscErrorCode PetscSpaceEvaluate(PetscSpace sp, PetscInt npoints, const PetscReal points[], PeOp PetscReal B[], PeOp PetscReal D[], PeOp PetscReal H[])

Input Parameters

• sp - The PetscSpace

• npoints - The number of evaluation points, in reference coordinates

• points - The point coordinates

Output Parameters

• B - The function evaluations in a npoints x nfuncs array

• D - The derivative evaluations in a npoints x nfuncs x dim array

• H - The second derivative evaluations in a npoints x nfuncs x dim x dim array

Note

Above nfuncs is the dimension of the space, and dim is the spatial dimension. The coordinates are given on the reference cell, not in real space.

See Also

PetscSpace, PetscFECreateTabulation(), PetscFEGetCellTabulation(), PetscSpaceCreate()

Level

beginner

Location

src/dm/dt/space/interface/space.c

Implementations

PetscSpaceEvaluate_Point() in src/dm/dt/space/impls/point/spacepoint.c
PetscSpaceEvaluate_Polynomial() in src/dm/dt/space/impls/poly/spacepoly.c
PetscSpaceEvaluate_Ptrimmed() in src/dm/dt/space/impls/ptrimmed/spaceptrimmed.c
PetscSpaceEvaluate_Subspace() in src/dm/dt/space/impls/subspace/spacesubspace.c
PetscSpaceEvaluate_Sum() in src/dm/dt/space/impls/sum/spacesum.c
PetscSpaceEvaluate_Tensor() in src/dm/dt/space/impls/tensor/spacetensor.c
PetscSpaceEvaluate_WXY() in src/dm/dt/space/impls/wxy/spacewxy.c

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Index of all SPACE routines
Table of Contents for all manual pages
Index of all manual pages