petsc-master 2019-12-13
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MatKAIJGetSRead

Get a read-only pointer to the S matrix describing the shift action of the KAIJ 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 KAIJ 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 or PETSC_IGNORE if not desired)

See Also

MatCreateKAIJ(), MatGetBlockSizes()

Level

advanced

Location

src/mat/impls/kaij/kaij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages