petsc-3.7.7 2017-09-25
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