PETSc version 3.15.5
PetscDSSetUpdate
Set the pointwise update function for a given field 
Synopsis
#include "petscds.h" 
PetscErrorCode PetscDSSetUpdate(PetscDS ds, PetscInt f,
                                void (*update)(PetscInt dim, PetscInt Nf, PetscInt NfAux,
                                               const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[],
                                               const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[],
                                               PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar uNew[]))
Not collective
Input Parameters
|  | ds | - The PetscDS | 
|  | f | - The field number | 
|  | update | - update function | 
Note: The calling sequence for the callback update is given by
update(PetscInt dim, PetscInt Nf, PetscInt NfAux,
       const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[],
       const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[],
       PetscReal t, const PetscReal x[], PetscScalar uNew[])
|  | dim | - the spatial dimension | 
|  | Nf | - the number of fields | 
|  | uOff | - the offset into u[] and u_t[] for each field | 
|  | uOff_x | - the offset into u_x[] for each field | 
|  | u | - each field evaluated at the current point | 
|  | u_t | - the time derivative of each field evaluated at the current point | 
|  | u_x | - the gradient of each field evaluated at the current point | 
|  | aOff | - the offset into a[] and a_t[] for each auxiliary field | 
|  | aOff_x | - the offset into a_x[] for each auxiliary field | 
|  | a | - each auxiliary field evaluated at the current point | 
|  | a_t | - the time derivative of each auxiliary field evaluated at the current point | 
|  | a_x | - the gradient of auxiliary each field evaluated at the current point | 
|  | t | - current time | 
|  | x | - coordinates of the current point | 
|  | uNew | - new field values at the current point | 
See Also
 PetscDSGetResidual()
Level
intermediate
Location
src/dm/dt/interface/dtds.c
Index of all DT routines
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Index of all manual pages