MatMFFDSetHHistory#

Sets an array to collect a history of the differencing values (h) computed for the matrix-free product MATMFFD matrix

Synopsis#

#include "petscmat.h"   
PetscErrorCode MatMFFDSetHHistory(Mat J, PetscScalar history[], PetscInt nhistory)

Logically Collective

Input Parameters#

  • J - the MATMFFD matrix-free matrix

  • history - space to hold the history

  • nhistory - number of entries in history, if more entries are generated than nhistory, then the later ones are discarded

Note#

Use MatMFFDResetHHistory() to reset the history counter and collect a new batch of differencing parameters, h.

See Also#

Matrices, Mat, MATMFFD, MatMFFDGetH(), MatCreateSNESMF(), MatMFFDResetHHistory(), MatMFFDSetFunctionError()

Level#

advanced

Location#

src/mat/impls/mffd/mffd.c

Implementations#

MatMFFDSetHHistory_MFFD in src/mat/impls/mffd/mffd.c


Edit on GitLab

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages