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#

Matrices, Mat, MatSetSizes(), MatGetLocalSize()

Level#

beginner

Location#

src/mat/interface/matrix.c

Examples#

src/ksp/ksp/tutorials/ex4.c
src/ksp/ksp/tutorials/ex59.c
src/ts/tutorials/ex14.c
src/snes/tutorials/ex12.c
src/tao/leastsquares/tutorials/tomography.c
src/tao/constrained/tutorials/tomographyADMM.c
src/tao/constrained/tutorials/maros.c
src/ksp/ksp/tutorials/ex60.c
src/ksp/ksp/tutorials/ex72.c
src/snes/tutorials/ex48.c

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