petsc-3.9.4 2018-09-11
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MatCompositeMerge

 Given a composite matrix, replaces it with a "regular" matrix by summing all the matrices inside the composite matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatCompositeMerge(Mat mat)
Collective on MPI_Comm

Input Parameters

mat -the composite matrix

Options Database

-mat_composite_merge (you must call MatAssemblyBegin()/MatAssemblyEnd() to have this checked) -

Notes

The MatType of the resulting matrix will be the same as the MatType of the FIRST matrix in the composite matrix.

See Also

MatDestroy(), MatMult(), MatCompositeAddMat(), MatCreateComposite(), MATCOMPOSITE

Level

advanced

Location

src/mat/impls/composite/mcomposite.c

Examples

src/mat/examples/tutorials/ex9.c.html

Index of all Mat routines
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Index of all manual pages