MatGetValue#

Gets a single value from a matrix

Synopsis#

static inline PetscErrorCode MatGetValue(Mat mat, PetscInt row, PetscInt col, PetscScalar *va)

Not Collective; can only return a value owned by the given process

Input Parameters#

mat - the matrix
row - the row location of the entry
col - the column location of the entry

Output Parameter#

va - the value

Notes#

For efficiency one should use MatGetValues() and get several values simultaneously.

See notes for MatGetValues().

See Also#

MatSetValue(), MatGetValueLocal(), MatGetValues()

Level#

advanced

Location#

include/petscmat.h

Examples#

src/snes/tutorials/ex48.c.html
src/ts/tutorials/ex14.c.html

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