#include "petscksp.h" PetscErrorCode MatSchurComplementUpdate(Mat N,Mat A,Mat Ap,Mat B,Mat C,Mat D,MatStructure str)Collective on Mat
| N | - the matrix obtained with MatCreateSchurComplement() | |
| A,B,C,D | - the four parts of the original matrix (D is optional) | |
| str | - either SAME_NONZERO_PATTERN,DIFFERENT_NONZERO_PATTERN,SAME_PRECONDITIONER |
Notes: All four matrices must have the same MPI communicator
A and D must be square matrices
All of the matrices provided must have the same sizes as was used with MatCreateSchurComplement() or MatSchurComplementSet() though they need not be the same matrices
Level:intermediate
Location:src/ksp/ksp/utils/schurm.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages