MatSetValueLocal#

Inserts or adds a single value into a matrix, using a local numbering of the nodes.

Synopsis#

static inline PetscErrorCode MatSetValueLocal(Mat mat, PetscInt i, PetscInt j, PetscScalar va, InsertMode mode)

Not Collective

Input Parameters#

  • mat - the matrix

  • i - the row location of the entry

  • j - the column location of the entry

  • va - the value to insert

  • mode - either INSERT_VALUES or ADD_VALUES

Notes#

For efficiency one should use MatSetValuesLocal() and set several values simultaneously.

See notes for MatSetValuesLocal() for additional information on when and how this function can be used.

See Also#

Matrices, MatSetValue(), MatSetValuesLocal()

Level#

intermediate

Location#

include/petscmat.h

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages