PETSc version 3.16.1
PetscFormKey
This key indicates how to use a set of pointwise functions defining part of a system of equations
Synopsis
typedef struct _PetscFormKey
{
DMLabel label; /* The (label, value) select a subdomain */
PetscInt value;
PetscInt field; /* Selects the field for the test function */
PetscInt part; /* Selects the equation part. For example, LHS = 0 and RHS = 1 in IMEX methods. More pieces can be present for operator splitting methods. */
} PetscFormKey;
The subdomain on which to integrate is specified by (label, value), the test function field by (field), and the
piece of the equation by (part). For example, LHS = 0 and RHS = 1 in IMEX methods. More pieces can be present for
operator splitting methods.
See Also
DMPlexSNESComputeResidualFEM(), DMPlexSNESComputeJacobianFEM(), DMPlexSNESComputeBoundaryFEM()
Level
intermediate
Location
src/dm/dt/../../../include/petscdstypes.h
Index of all DM routines
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