petsc-master 2019-08-22
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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()

Level

intermediate

Location

src/dm/dt/interface/dtds.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages