MatSetValuesRow#

Inserts a row (block row for MATBAIJ matrices) of nonzero values into a matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatSetValuesRow(Mat mat, PetscInt row, const PetscScalar v[])

Not Collective

Input Parameters#

  • mat - the matrix

  • row - the (block) row to set

  • v - a logically two-dimensional (column major) array of values for block matrices with blocksize larger than one, otherwise a one dimensional array of values

Notes#

The values, v, are column-oriented for the block version.

All the nonzeros in the row must be provided

THE MATRIX MUST HAVE PREVIOUSLY HAD ITS COLUMN INDICES SET. IT IS RARE THAT THIS ROUTINE IS USED, usually MatSetValues() is used.

The row must belong to this process

See Also#

Matrices, Mat, MatSetValues(), MatSetOption(), MatAssemblyBegin(), MatAssemblyEnd(), MatSetValuesBlocked(), MatSetValuesLocal(), InsertMode, INSERT_VALUES, ADD_VALUES, MatSetValues()

Level#

advanced

Location#

src/mat/interface/matrix.c

Implementations#

MatSetValuesRow_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatSetValuesRow_SeqAIJ in src/mat/impls/aij/seq/aij.c

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