petsc-3.7.1 2016-05-15
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PetscOptionsHasName

Determines whether a certain option is given 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  PetscOptionsHasName(PetscOptions options,const char pre[],const char name[],PetscBool  *set)
Not Collective Many br

Input Parameters

options - options database use NULL for default global database Many br
name - the option one is seeking Many br
pre - string to prepend to the name or NULL Many br

Output Parameters

set -PETSC_TRUE if found else PETSC_FALSE. Many br

Many br

Notes: Name cannot be simply -h Many br

In many cases you probably want to use PetscOptionsGetBool() instead of calling this, to allowing toggling values. Many br

See Also

PetscOptionsGetInt(), PetscOptionsGetReal(),
PetscOptionsGetString(), PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsBool(), Many brPetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(), Many brPetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(), Many brPetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(), Many brPetscOptionsFList(), PetscOptionsEList() Many br

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

Examples

src/sys/classes/random/examples/tutorials/ex2.c.html
src/vec/vec/examples/tutorials/ex9.c.html
src/vec/vec/examples/tutorials/ex9f.F.html
src/vec/vec/examples/tutorials/ex14f.F.html
src/mat/examples/tutorials/ex16.c.html
src/ksp/ksp/examples/tutorials/ex2f.F.html
src/ksp/ksp/examples/tutorials/ex6f.F.html
src/ksp/ksp/examples/tutorials/ex11f.F.html
src/ksp/ksp/examples/tutorials/ex14f.F.html
src/ksp/ksp/examples/tutorials/ex15f.F.html
src/snes/examples/tutorials/ex1.c.html