#include "petscmat.h" PetscErrorCode MatMatTransposeMult(Mat A,Mat B,MatReuse scall,PetscReal fill,Mat *C)Neighbor-wise Collective on Mat
A | - the left matrix | |
B | - the right matrix | |
scall | - either MAT_INITIAL_MATRIX or MAT_REUSE_MATRIX | |
fill | - expected fill as ratio of nnz(C)/(nnz(A) + nnz(B)), use PETSC_DEFAULT if not known |
MAT_REUSE_MATRIX can only be used if the matrices A and B have the same nonzero pattern as in the previous call
To determine the correct fill value, run with -info and search for the string "Fill ratio" to see the value actually needed.
This routine is currently only implemented for pairs of SeqAIJ matrices. C will be of type MATSEQAIJ.
Level:intermediate
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages