petsc-3.7.5 2017-01-01
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MatNestGetSubMat

 Returns a single, sub-matrix from a nest matrix.

Synopsis

#include "petscmat.h"   
PetscErrorCode  MatNestGetSubMat(Mat A,PetscInt idxm,PetscInt jdxm,Mat *sub)
Not collective

Input Parameters

A - nest matrix
idxm - index of the matrix within the nest matrix
jdxm - index of the matrix within the nest matrix

Output Parameter

sub -matrix at index idxm,jdxm within the nest matrix

See Also

MatNestGetSize(), MatNestGetSubMats()

Level:developer
Location:src/mat/impls/nest/matnest.c
Index of all Mat routines
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Index of all manual pages