petsc-3.14.6 2021-03-30
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
Table of Contents for all manual pages
Index of all manual pages