DMStagMatSetValuesStencil#

insert or add matrix entries using grid indexing

Synopsis#

PetscErrorCode DMStagMatSetValuesStencil(DM dm, Mat mat, PetscInt nRow, const DMStagStencil *posRow, PetscInt nCol, const DMStagStencil *posCol, const PetscScalar *val, InsertMode insertMode)

Not Collective

Input Parameters#

  • dm - the DMStag object

  • mat - the matrix

  • nRow - number of rows

  • posRow - grid locations (including components) of rows

  • nCol - number of columns

  • posCol - grid locations (including components) of columns

  • val - logically two-dimensional array of values

  • insertmode - INSERT_VALUES or ADD_VALUES

Notes#

See notes for MatSetValuesStencil()

See Also#

DMSTAG, DMStagStencil, DMStagStencilLocation, DMStagVecGetValuesStencil(), DMStagVecSetValuesStencil(), DMStagMatGetValuesStencil(), MatSetValuesStencil(), MatAssemblyBegin(), MatAssemblyEnd(), DMCreateMatrix()

Level#

intermediate

Location#

src/dm/impls/stag/stagstencil.c

Examples#

src/dm/impls/stag/tutorials/ex1.c.html
src/dm/impls/stag/tutorials/ex2.c.html
src/dm/impls/stag/tutorials/ex3.c.html
src/dm/impls/stag/tutorials/ex4.c.html
src/dm/impls/stag/tutorials/ex8.c.html


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