petsc-3.7.1 2016-05-15
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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