MatKAIJGetSRead#

Get a read-only pointer to the S matrix describing the shift action of the MATKAIJ matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatKAIJGetSRead(Mat A, PetscInt *m, PetscInt *n, const PetscScalar **S)

Not Collective; the entire S is stored and returned independently on all processes.

Input Parameter#

A - the MATKAIJ matrix

Output Parameters#

m - the number of rows in S
n - the number of columns in S
S - the S matrix, in form of a scalar array in column-major format

Note#

All output parameters are optional (pass NULL if not desired)

See Also#

Matrices, Mat, MATKAIJ, MatCreateKAIJ(), MatGetBlockSizes()

Level#

advanced

Location#

src/mat/impls/kaij/kaij.c

Index of all Mat routines
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Index of all manual pages