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/ex27.c
src/ksp/ksp/tutorials/ex4.c
src/ksp/ksp/tutorials/ex59.c
src/ksp/ksp/tutorials/ex60.c
src/ksp/ksp/tutorials/ex72.c
src/ksp/ksp/tutorials/ex73.c
src/ksp/ksp/tutorials/ex77.c
src/ksp/ksp/tutorials/ex81.c
src/mat/tutorials/ex10.c
src/mat/tutorials/ex12.c
src/mat/tutorials/ex16.c

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Index of all Mat routines
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Index of all manual pages