petsc-master 2019-09-16
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PetscDSSetExactSolution

Set the pointwise exact solution function for a given test field

Synopsis

#include "petscds.h" 
PetscErrorCode PetscDSSetExactSolution(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 - solution function for the test fields
ctx - 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

PetscDSGetExactSolution()

Level

intermediate

Location

src/dm/dt/interface/dtds.c

Examples

src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex62.c.html

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