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