#include "petscmat.h" PetscErrorCode MatBackwardSolve(Mat mat,Vec b,Vec x)Neighbor-wise Collective on Mat and Vec Many br
mat | - the factored matrix Many br | |
b | - the right-hand-side vector Many br |
The vectors b and x cannot be the same. I.e., one cannot Many brcall MatBackwardSolve(A,x,x). Many br
For matrix in seqsbaij format with block size larger than 1, Many brthe diagonal blocks are not implemented as D = D^(1/2) * D^(1/2) yet. Many brMatForwardSolve() solves U^T*D y = b, and Many brMatBackwardSolve() solves U x = y. Many brThus they do not provide a symmetric preconditioner. Many br
Most users should employ the simplified KSP interface for linear solvers Many brinstead of working directly with matrix algebra routines such as this. Many brSee, e.g., KSPCreate(). Many br
Many br
Level:developer
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages