# ISBlockGetBlockSize

Returns the number of elements in a block.

### Synopsis

    #include "petscis.h"
    PetscErrorCode PETSCVEC_DLLEXPORT ISBlockGetBlockSize(IS is,PetscInt *size)

Not Collective

### Input Parameter

is -the index set

### Output Parameter

size -the number of elements in a block

### See Also

ISBlockGetSize(), ISGetSize(), ISBlock(), ISCreateBlock()

Level:intermediate
Location:src/vec/is/impls/block/block.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/vec/is/examples/tutorials/ex3.c.html
src/vec/is/examples/tutorials/ex3f90.F.html