PETSc version 3.17.4
TaoGetHessian
Gets the function to compute the Hessian as well as the location to store the matrix.
Synopsis
#include "petsctao.h"
PetscErrorCode TaoGetHessian(Tao tao, Mat *H, Mat *Hpre, PetscErrorCode (**func)(Tao, Vec, Mat, Mat, void*), void **ctx)
Not collective
Input Parameter
OutputParameters
| H | - Matrix used for the hessian
|
| Hpre | - Matrix that will be used operated on by preconditioner, can be the same as H
|
| func | - Hessian evaluation routine
|
| ctx | - user-defined context for private data for the Hessian evaluation routine
|
Calling sequence of func
func(Tao tao,Vec x,Mat H,Mat Hpre,void *ctx);
| tao | - the Tao context
|
| x | - input vector
|
| H | - Hessian matrix
|
| Hpre | - preconditioner matrix, usually the same as H
|
| ctx | - [optional] user-defined Hessian context
|
See Also
TaoGetObjective(), TaoGetGradient(), TaoGetObjectiveAndGradient(), TaoSetHessian()
Level
beginner
Location
src/tao/interface/taosolver_hj.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages