:orphan: # PetscOptionsGetInt Gets the integer value for a particular option in the database. ## Synopsis ``` #include "petscsys.h" PetscErrorCode PetscOptionsGetInt(PetscOptions options, const char pre[], const char name[], PetscInt *ivalue, PetscBool *set) ``` Not Collective ## Input Parameters - ***options -*** options database, use `NULL` for default global database - ***pre -*** the string to prepend to the name or `NULL` - ***name -*** the option one is seeking ## Output Parameters - ***ivalue -*** the integer value to return - ***set -*** `PETSC_TRUE` if found, else `PETSC_FALSE` ## Notes If the user does not supply the option ivalue is NOT changed. Thus you should ALWAYS initialize the ivalue if you access it without first checking if the set flag is true. ## See Also `PetscOptionsGetReal()`, `PetscOptionsHasName()`, `PetscOptionsGetString()`, `PetscOptionsGetIntArray()`, `PetscOptionsGetRealArray()`, `PetscOptionsBool()` `PetscOptionsInt()`, `PetscOptionsString()`, `PetscOptionsReal()`, `PetscOptionsBool()`, `PetscOptionsName()`, `PetscOptionsBegin()`, `PetscOptionsEnd()`, `PetscOptionsHeadBegin()`, `PetscOptionsStringArray()`, `PetscOptionsRealArray()`, `PetscOptionsScalar()`, `PetscOptionsBoolGroupBegin()`, `PetscOptionsBoolGroup()`, `PetscOptionsBoolGroupEnd()`, `PetscOptionsFList()`, `PetscOptionsEList()` ## Level beginner ## Location src/sys/objects/options.c ## Examples src/dm/impls/stag/tutorials/ex4.c
src/dm/impls/stag/tutorials/ex6.c
src/dm/impls/swarm/tutorials/ex1.c
src/dm/tutorials/ex14.c
src/dm/tutorials/ex20.c
src/dm/tutorials/ex21.c
src/dm/tutorials/ex26.c
src/dm/tutorials/ex3.c
src/dm/tutorials/ex5.c
src/dm/tutorials/swarm_ex1.c
src/ksp/ksp/tutorials/bench_kspsolve.c
--- [Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/objects/options.c) [Index of all Sys routines](index.md) [Table of Contents for all manual pages](/manualpages/index.md) [Index of all manual pages](/manualpages/singleindex.md)