petsc-3.12.5 2020-03-29
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MatCompositeSetMatStructure

 Indicates structure of matrices in the composite matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatCompositeSetMatStructure(Mat mat,MatStructure str)
Not Collective

Input Parameters

mat - the composite matrix
str - either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN (default) or SUBSET_NONZERO_PATTERN

Notes

Information about the matrices structure is used in MatCompositeMerge() for additive composite matrix.

See Also

MatAXPY(), MatCreateComposite(), MatCompositeMerge() MatCompositeGetMatStructure(), MATCOMPOSITE

Level

advanced

Location

src/mat/impls/composite/mcomposite.c

Examples

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

Implementations

MatCompositeSetMatStructure_Composite in src/mat/impls/composite/mcomposite.c

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