petsc-3.9.4 2018-09-11
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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

MatGetLocalSize()

Level

beginner

Location

src/mat/interface/matrix.c

Examples

src/mat/examples/tutorials/ex4.c.html
src/mat/examples/tutorials/ex10.c.html
src/mat/examples/tutorials/ex12.c.html
src/mat/examples/tutorials/ex16.c.html
src/mat/examples/tutorials/ex17.c.html
src/ksp/ksp/examples/tutorials/ex72.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex48.c.html
src/ts/examples/tutorials/ex14.c.html
src/tao/constrained/examples/tutorials/maros.c.html

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