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

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