petsc-3.14.6 2021-03-30

TaoSetJacobianRoutine

Sets the function to compute the Jacobian as well as the location to store the matrix.

#include "petsctao.h" 
PetscErrorCode TaoSetJacobianRoutine(Tao tao, Mat J, Mat Jpre, PetscErrorCode (*func)(Tao, Vec, Mat, Mat, void*), void *ctx)

Logically collective on Tao

	tao	- the Tao context
	J	- Matrix used for the jacobian
	Jpre	- Matrix that will be used operated on by preconditioner, can be same as J
	func	- Jacobian evaluation routine
	ctx	- [optional] user-defined context for private data for the Jacobian evaluation routine (may be NULL)

   func(Tao tao,Vec x,Mat J,Mat Jpre,void *ctx);

	tao	- the Tao context
	x	- input vector
	J	- Jacobian matrix
	Jpre	- preconditioning matrix, usually the same as J
	ctx	- [optional] user-defined Jacobian context

intermediate