PetscOptionsIntArray — PETSc 3.25.2 documentation

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# PetscOptionsIntArray

Gets an array of integers for a particular option in the database.

## Synopsis

    #include <petscoptions.h>
    PetscErrorCode PetscOptionsIntArray(const char opt[], const char text[], const char man[], PetscInt value[], PetscInt *n, PetscBool *set)

Logically Collective on the communicator passed in `PetscOptionsBegin()`

## Input Parameters

- opt - the option one is seeking

- text - short string describing option

- man - manual page for option

- n - maximum number of values

## Output Parameters

- value - location to copy values

- n - actual number of values found

- set - `PETSC_TRUE` if found, else `PETSC_FALSE`

## Notes

The array can be passed as

- a comma separated list - 0,1,2,3,4,5,6,7

- a range (start-end+1) - 0-8

- a range with given increment (start-end+1:inc) - 0-7:2

- a combination of values and ranges separated by commas - 0,1-8,8-15:2

There must be no intervening spaces between the values.

Must be used between a `PetscOptionsBegin()` and a `PetscOptionsEnd()`

## See Also

`PetscOptionsGetInt()`, `PetscOptionsGetReal()`, `PetscOptionsHasName()`, `PetscOptionsGetIntArray()`, `PetscOptionsGetRealArray()`, `PetscOptionsBool()`, `PetscOptionsName()`, `PetscOptionsBegin()`, `PetscOptionsEnd()`, `PetscOptionsHeadBegin()`, `PetscOptionsStringArray()`, `PetscOptionsRealArray()`, `PetscOptionsScalar()`, `PetscOptionsBoolGroupBegin()`, `PetscOptionsBoolGroup()`, `PetscOptionsBoolGroupEnd()`, `PetscOptionsFList()`, `PetscOptionsEList()`

## Level

beginner

## Location

include/petscoptions.h

## Examples

src/sys/tutorials/ex9f.F90
src/dm/impls/plex/tutorials/ex11.c
src/snes/tutorials/ex15.c
src/dm/tutorials/ex2.c
src/mat/tutorials/ex17.c
src/ksp/ksp/tutorials/ex71.c
src/dm/impls/plex/tutorials/ex6.c
src/dm/impls/plex/tutorials/ex13.c
src/ts/tutorials/ex11.c

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