MatGetSize#

Returns the numbers of rows and columns in a matrix.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatGetSize(Mat mat, PetscInt *m, PetscInt *n)

Not Collective

Input Parameter#

mat - the matrix

Output Parameters#

m - the number of global rows
n - the number of global columns

Note: both output parameters can be NULL on input.

See Also#

Mat, MatSetSizes(), MatGetLocalSize()

Level#

beginner

Location#

src/mat/interface/matrix.c

Examples#

src/mat/tutorials/ex10.c.html
src/mat/tutorials/ex12.c.html
src/mat/tutorials/ex16.c.html
src/mat/tutorials/ex17.c.html
src/mat/tutorials/ex17f.F90.html
src/mat/tutorials/ex4.c.html
src/mat/tutorials/ex4f.F90.html
src/ksp/ksp/tutorials/ex27.c.html
src/ksp/ksp/tutorials/ex4.c.html
src/ksp/ksp/tutorials/ex59.c.html
src/ksp/ksp/tutorials/ex60.c.html

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