petsc-3.7.1 2016-05-15
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 Many br
Input Parameters
| mat | - matrix of arbitrary type Many br |
| d1 | - A vector with diagonal elements of D1 Many br |
| d2 | - A vector Many br |
Output Parameters
J -New matrix whose operations are defined in terms of mat, D1, and D2. Many br
Notes
The user provides the input data and is responsible for destroying Many brthis data after matrix J has been destroyed. Many brThe operation MatMult(A,D2,D1) must be well defined. Many brBefore calling the operation MatGetDiagonal(), the function Many brMatADAComputeDiagonal() must be called. The matrices A and D1 must Many brbe the same during calls to MatADAComputeDiagonal() and Many brMatGetDiagonal(). Many br
Many br
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