petsc-3.12.5 2020-03-29

MatCreateADA

Creates a matrix M=A^T D1 A + D2 where D1, D2 are diagonal

#include "mat.h"  
PetscErrorCode MatCreateADA(Mat mat,Vec d1, Vec d2, Mat *J)

Collective on matrix

	mat	- matrix of arbitrary type
	d1	- A vector defining a diagonal matrix
	d2	- A vector defining a diagonal matrix

J -New matrix whose operations are defined in terms of mat, D1, and D2.

The user provides the input data and is responsible for destroying this data after matrix J has been destroyed.

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