petsc-3.8.4 2018-03-24
MatCreateADA
Creates a matrix M=A^T D1 A + D2 where D1, D2 are diagonal
Synopsis
#include "mat.h"
PetscErrorCode MatCreateADA(Mat mat,Vec d1, Vec d2, Mat *J)
Collective on matrix
Input Parameters
| mat | - matrix of arbitrary type
|
| d1 | - A vector with diagonal elements of D1
|
| d2 | - A vector
|
Output Parameters
J -New matrix whose operations are defined in terms of mat, D1, and D2.
Notes
The user provides the input data and is responsible for destroying
this data after matrix J has been destroyed.
The operation MatMult(A,D2,D1) must be well defined.
Before calling the operation MatGetDiagonal(), the function
MatADAComputeDiagonal() must be called. The matrices A and D1 must
be the same during calls to MatADAComputeDiagonal() and
MatGetDiagonal().
See Also
MatCreate()
Level:developer
Location:src/tao/matrix/adamat.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages