PetscPointJacFn

A prototype of a pointwise function that can be passed to, for example, PetscDSSetJacobian() for computing Jacobians

Synopsis

typedef void PetscPointJacFn(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, PetscReal u_tShift, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar g[]);

Calling Sequence

• dim - the coordinate dimension

• Nf - the number of fields

• NfAux - the number of auxiliary fields

• uOff - the offset into u[] and u_t[] for each field

• uOff_x - the offset into u_x[] for each field

• u - each field evaluated at the current point

• u_t - the time derivative of each field evaluated at the current point

• u_x - the gradient of each field evaluated at the current point

• aOff - the offset into a[] and a_t[] for each auxiliary field

• aOff_x - the offset into a_x[] for each auxiliary field

• a - each auxiliary field evaluated at the current point

• a_t - the time derivative of each auxiliary field evaluated at the current point

• a_x - the gradient of auxiliary each field evaluated at the current point

• t - current time

• u_tShift - the multiplier a for \(dF/dU_t\)

• x - coordinates of the current point

• numConstants - number of constant parameters

• constants - constant parameters

• g - output values at the current point

See Also

PetscPointFn, PetscDSSetJacobian(), PetscDSGetJacobian(), PetscDSSetJacobianPreconditioner(), PetscDSGetJacobianPreconditioner(), PetscDSSetDynamicJacobian(), PetscDSGetDynamicJacobian()`

Level

beginner

Location

include/petscdstypes.h

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