petsc-master 2014-10-19
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MatMFFDGetH

Gets the last value that was used as the differencing parameter.

Synopsis

#include "petscmat.h"   
PetscErrorCode  MatMFFDGetH(Mat mat,PetscScalar *h)
Not Collective

Input Parameters

mat -the matrix obtained with MatCreateSNESMF()

Output Paramter

h -the differencing step size

Keywords

SNES, matrix-free, parameters

See Also

MatCreateSNESMF(),MatMFFDSetHHistory(), MatCreateMFFD(), MATMFFD, MatMFFDResetHHistory()

Level:advanced
Location:
src/mat/impls/mffd/mffd.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages