petsc-3.11.4 2019-09-28
MatPtAPSymbolic
Creates the (i,j) structure of the matrix product C = P^T * A * P
Synopsis
#include "petscmat.h"
PetscErrorCode MatPtAPSymbolic(Mat A,Mat P,PetscReal fill,Mat *C)
Neighbor-wise Collective on Mat
Input Parameters
| A | - the matrix
|
| P | - the projection matrix
|
Output Parameters
C -the (i,j) structure of the product matrix
Notes
C will be created and must be destroyed by the user with MatDestroy().
This routine is currently only implemented for pairs of SeqAIJ matrices and classes
which inherit from SeqAIJ. C will be of type MATSEQAIJ. The product is computed using
this (i,j) structure by calling MatPtAPNumeric().
See Also
MatPtAP(), MatPtAPNumeric(), MatMatMultSymbolic()
Level
intermediate
Location
src/mat/interface/matrix.c
Implementations
MatPtAPSymbolic_MPIAIJ_MPIAIJ_scalable in src/mat/impls/aij/mpi/mpiptap.c
MatPtAPSymbolic_MPIAIJ_MPIAIJ in src/mat/impls/aij/mpi/mpiptap.c
MatPtAPSymbolic_SeqAIJ_SeqAIJ_SparseAxpy in src/mat/impls/aij/seq/matptap.c
MatPtAPSymbolic_SeqDense_SeqDense in src/mat/impls/dense/seq/dense.c
MatPtAPSymbolic_AIJ_AIJ_wHYPRE in src/mat/impls/hypre/mhypre.c
MatPtAPSymbolic_IS_XAIJ in src/mat/impls/is/matis.c
MatPtAPSymbolic_SeqAIJ_SeqMAIJ in src/mat/impls/maij/maij.c
MatPtAPSymbolic_MPIAIJ_MPIMAIJ in src/mat/impls/maij/maij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages