PetscOptionsHasName#
Determines whether a certain option is given in the database. This returns true whether the option is a number, string or Boolean, even if its value is set to false.
Synopsis#
#include "petscsys.h"
PetscErrorCode PetscOptionsHasName(PetscOptions options, const char pre[], const char name[], PetscBool *set)
Not Collective
Input Parameters#
options - options database, use
NULLfor default global databasepre - string to prepend to the name or
NULLname - the option one is seeking
Output Parameter#
set -
PETSC_TRUEif found elsePETSC_FALSE.
Note#
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(), PetscOptionsHeadBegin(),
PetscOptionsStringArray(), PetscOptionsRealArray(), PetscOptionsScalar(),
PetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(),
PetscOptionsFList(), PetscOptionsEList()
Level#
beginner
Location#
Examples#
src/ksp/ksp/tutorials/ex2f.F90
src/ksp/ksp/tutorials/ex71.c
src/ksp/ksp/tutorials/ex11f.F90
src/ksp/ksp/tutorials/ex6f.F90
src/ksp/ksp/tutorials/ex14f.F90
src/ksp/ksp/tutorials/ex57f.F90
src/ksp/ksp/tutorials/ex15f.F90
src/mat/tutorials/ex16.c
src/ksp/ksp/tutorials/ex5.c
src/ksp/ksp/tutorials/ex76.c
Index of all Sys routines
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Index of all manual pages