petsc-3.12.5 2020-03-29
MatSolveAdd
Computes x = y + inv(A)*b, given a factored matrix.
Synopsis
#include "petscmat.h"
PetscErrorCode MatSolveAdd(Mat mat,Vec b,Vec y,Vec x)
Neighbor-wise Collective on Mat
Input Parameters
| mat | - the factored matrix
|
| b | - the right-hand-side vector
|
| y | - the vector to be added to
|
Output Parameter
x -the result vector
Notes
The vectors b and x cannot be the same. I.e., one cannot
call MatSolveAdd(A,x,y,x).
Most users should employ the simplified KSP interface for linear solvers
instead of working directly with matrix algebra routines such as this.
See, e.g., KSPCreate().
See Also
MatSolve(), MatSolveTranspose(), MatSolveTransposeAdd()
Level
developer
Location
src/mat/interface/matrix.c
Implementations
MatSolveAdd_SeqAIJ_inplace in src/mat/impls/aij/seq/aijfact.c
MatSolveAdd_SeqAIJ in src/mat/impls/aij/seq/aijfact.c
MatSolveAdd_Elemental in src/mat/impls/elemental/matelem.cxx
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages