petsc-3.12.5 2020-03-29
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MatRARtSymbolic

Creates the (i,j) structure of the matrix product C = R * A * R^T

Synopsis

#include "petscmat.h" 
PetscErrorCode MatRARtSymbolic(Mat A,Mat R,PetscReal fill,Mat *C)
Neighbor-wise Collective on Mat

Input Parameters

A - the matrix
R - 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 MatRARtNumeric().

See Also

MatRARt(), MatRARtNumeric(), MatMatMultSymbolic()

Level

intermediate

Location

src/mat/interface/matrix.c

Implementations

MatRARtSymbolic_SeqAIJ_SeqAIJ_colorrart in src/mat/impls/aij/seq/matrart.c
MatRARtSymbolic_SeqAIJ_SeqAIJ_matmattransposemult in src/mat/impls/aij/seq/matrart.c
MatRARtSymbolic_SeqAIJ_SeqAIJ in src/mat/impls/aij/seq/matrart.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages