# PetscOptionsName
Determines if a particular option has been set in the database. This returns true whether the option is a number, string or boolean, even its value is set to false. Logically Collective on the communicator passed in `PetscOptionsBegin()`


## Synopsis
```
#include "petscsys.h"
PetscErrorCode PetscOptionsName(const char opt[],const char text[],const char man[],PetscBool  *flg)
```

## Input Parameters

- ***opt -*** option name
- ***text -*** short string that describes the option
- ***man -*** manual page with additional information on option



## Output Parameter

- ***flg -*** `PETSC_TRUE` if found, else `PETSC_FALSE`





## Note
Must be between a `PetscOptionsBegin()` and a `PetscOptionsEnd()`


## See Also
 `PetscOptionsGetReal()`, `PetscOptionsHasName()`, `PetscOptionsGetString()`, `PetscOptionsGetInt()`,
`PetscOptionsGetIntArray()`, `PetscOptionsGetRealArray()`, `PetscOptionsGetBool()`,
`PetscOptionsInt()`, `PetscOptionsString()`, `PetscOptionsReal()`, `PetscOptionsBool()`,
`PetscOptionsName()`, `PetscOptionsBegin()`, `PetscOptionsEnd()`, `PetscOptionsHeadBegin()`,
`PetscOptionsStringArray()`, `PetscOptionsRealArray()`, `PetscOptionsScalar()`,
`PetscOptionsBoolGroupBegin()`, `PetscOptionsBoolGroup()`, `PetscOptionsBoolGroupEnd()`,
`PetscOptionsFList()`, `PetscOptionsEList()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/objects/aoptions.c.html#PetscOptionsName">src/sys/objects/aoptions.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex15.c.html">src/snes/tutorials/ex15.c.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/objects/aoptions.c)


[Index of all Sys routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
