MatMultDiagonalBlock#
Computes the matrix-vector product, \(y = Dx\). Where D is defined by the inode or block structure of the diagonal
Synopsis#
#include "petscmat.h"
PetscErrorCode MatMultDiagonalBlock(Mat mat, Vec x, Vec y)
Collective
Input Parameters#
mat - the matrix
x - the vector to be multiplied
Output Parameter#
y - the result
Note#
The vectors x and y cannot be the same. I.e., one cannot
call MatMultDiagonalBlock(A,y,y).
See Also#
Matrices, Mat, MatMult(), MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level#
developer
Location#
Implementations#
MatMultDiagonalBlock_MPIAIJ() in src/mat/impls/aij/mpi/mpiaij.c
MatMultDiagonalBlock_MPISELL() in src/mat/impls/sell/mpi/mpisell.c
Index of all Mat routines
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Index of all manual pages