petsc-3.13.6 2020-09-29
MatTransColoringApplyDenToSp
Given a symbolic matrix product Csp=A*B^T for which a MatTransposeColoring context has been created and a dense matrix Cden=A*Btdense in which Btdens is obtained from MatTransColoringApplySpToDen(), recover sparse matrix Csp from Cden.
Synopsis
#include "petscmat.h"
PetscErrorCode MatTransColoringApplyDenToSp(MatTransposeColoring matcoloring,Mat Cden,Mat Csp)
Collective on MatTransposeColoring
Input Parameters
| coloring | - coloring context created with MatTransposeColoringCreate()
|
| Cden | - matrix product of a sparse matrix and a dense matrix Btdense
|
Output Parameter
Csp -sparse matrix
Notes
These are used internally for some implementations of MatRARt()
See Also
MatTransposeColoringCreate(), MatTransposeColoringDestroy(), MatTransColoringApplySpToDen()
Level
advanced
Location
src/mat/interface/matrix.c
Implementations
MatTransColoringApplyDenToSp_SeqAIJ in src/mat/impls/aij/seq/matmatmult.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages