MatSetValue#

Set a single entry into a matrix. Not collective

Synopsis#

#include <petscmat.h>
PetscErrorCode MatSetValue(Mat m,PetscInt row,PetscInt col,PetscScalar value,InsertMode mode)

Input Parameters#

  • m - the matrix

  • row - the row location of the entry

  • col - the column location of the entry

  • value - the value to insert

  • mode - either INSERT_VALUES or ADD_VALUES

Notes#

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

See Also#

MatGetValue(), MatSetValues(), MatSetValueLocal(), MatSetValuesLocal()

Level#

beginner

Location#

include/petscmat.h

Examples#

src/mat/tutorials/ex4.c.html
src/mat/tutorials/ex4f.F90.html
src/ksp/ksp/tutorials/ex21.c.html
src/ksp/ksp/tutorials/ex27.c.html
src/ksp/ksp/tutorials/ex4.c.html
src/ksp/ksp/tutorials/ex44f.F90.html
src/ksp/ksp/tutorials/ex59.c.html
src/ksp/ksp/tutorials/ex61f.F90.html
src/ksp/ksp/tutorials/ex73.c.html
src/ksp/ksp/tutorials/ex76.c.html
src/snes/tutorials/ex47cu.cu.html

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