petsc-master 2014-09-12
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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(const char pre[],const char name[],PetscBool  *set)
Not Collective

Input Parameters

name - the option one is seeking
pre - string to prepend to the name or NULL

Output Parameters

set -PETSC_TRUE if found else PETSC_FALSE.

Notes: Name cannot be simply -h

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

See Also

PetscOptionsGetInt(), PetscOptionsGetReal(),
PetscOptionsGetString(), PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsBool(), PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(), PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(), PetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(), PetscOptionsFList(), PetscOptionsEList()

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