Evaluate the left hand side via the user-provided Jacobian, for linear problems only
PetscErrorCode TSComputeIFunctionLinear(TS ts,PetscReal t,Vec U,Vec Udot,Vec F,void *ctx)
Collective on TS
|ts ||- time stepping context
|t ||- time at which to evaluate
|U ||- state at which to evaluate
|Udot ||- time derivative of state vector
|ctx ||- context
The assumption here is that the left hand side is of the form A*Udot (and not A*Udot + B*U). For other cases, the
user is required to write their own TSComputeIFunction.
This function is intended to be passed to TSSetIFunction() to evaluate the left hand side for linear problems.
The matrix (and optionally the evaluation context) should be passed to TSSetIJacobian().
Note that using this function is NOT equivalent to using TSComputeRHSFunctionLinear() since that solves Udot = A U
TSSetIFunction(), TSSetIJacobian(), TSComputeIJacobianConstant(), TSComputeRHSFunctionLinear()
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages