#include "petscdmfield.h" #include "petscdmfield.h" PetscErrorCode DMFieldEvaluateFE(DMField field, IS cellIS, PetscQuadrature points, PetscDataType datatype, void *B, void *D, void *H)Not collective
field | - The DMField object | |
cellIS | - Index set for cells on which to evaluate the field | |
points | - The quadature containing the points in the reference cell at which to evaluate the field. | |
datatype | - The PetscDataType of the output arrays: either PETSC_REAL or PETSC_SCALAR. If the field is complex and datatype is PETSC_REAL, the real part of the field is returned. |
B | - pointer to data of size c * n * sizeof(datatype), where c is the number of components in the field. If B is not NULL, the values of the field are written in this array, varying first by component, then by point. | |
D | - pointer to data of size d * c * n * sizeof(datatype). If D is not NULL, the values of the field's spatial derivatives are written in this array, varying first by the partial derivative component, then by field component, then by point. | |
H | - pointer to data of size d * d * c * n * sizeof(datatype). If H is not NULL, the values of the field's second spatial derivatives are written in this array, varying first by the second partial derivative component, then by field component, then by point. |