petsc-3.4.2 2013-07-02

# 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.

### Synopsis

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

Logically Collective on the communicator passed in PetscOptionsBegin()

### 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

Notes: Must be between a PetscOptionsBegin() and a PetscOptionsEnd()

### See Also

PetscOptionsGetReal(), PetscOptionsHasName(), PetscOptionsGetString(), PetscOptionsGetInt(),
PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsBool() PetscOptionsInt(), PetscOptionsString(), PetscOptionsReal(), PetscOptionsBool(), PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(), PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(), PetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(), PetscOptionsList(), PetscOptionsEList()

Level:beginner
Location: src/sys/objects/aoptions.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/snes/examples/tutorials/ex15.c.html