PETSc version 3.15.5
PetscDSSetExactSolutionTimeDerivative
Set the pointwise time derivative of the exact solution function for a given test field 
Synopsis
#include "petscds.h" 
PetscErrorCode PetscDSSetExactSolutionTimeDerivative(PetscDS prob, PetscInt f, PetscErrorCode (*sol)(PetscInt dim, PetscReal t, const PetscReal x[], PetscInt Nc, PetscScalar u[], void *ctx), void *ctx)
Not collective
Input Parameters
|  | prob | - The PetscDS | 
|  | f | - The test field number | 
|  | sol | - time derivative of the solution function for the test fields | 
|  | ctx | - time derivative of the solution context or NULL | 
Note: The calling sequence for solution functions is given by
sol(PetscInt dim, PetscReal t, const PetscReal x[], PetscInt Nc, PetscScalar u[], void *ctx)
|  | dim | - the spatial dimension | 
|  | t | - current time | 
|  | x | - coordinates of the current point | 
|  | Nc | - the number of field components | 
|  | u | - the solution field evaluated at the current point | 
|  | ctx | - a user context | 
See Also
 PetscDSGetExactSolutionTimeDerivative(), PetscDSSetExactSolution()
Level
intermediate
Location
src/dm/dt/interface/dtds.c
Examples
src/ts/tutorials/ex45.c.html
Index of all DT routines
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Index of all manual pages