PETSc version 3.15.5
PetscDSGetExactSolution
Get the pointwise exact solution function for a given test field 
Synopsis
#include "petscds.h" 
PetscErrorCode PetscDSGetExactSolution(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 | 
Output Parameter
|  | exactSol | - exact solution for the test field | 
|  | exactCtx | - exact solution context | 
Note: The calling sequence for the 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
 PetscDSSetExactSolution(), PetscDSGetExactSolutionTimeDerivative()
Level
intermediate
Location
src/dm/dt/interface/dtds.c
Examples
src/tao/tutorials/ex1.c.html
src/tao/tutorials/ex2.c.html
Index of all DT routines
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Index of all manual pages