PetscOptionsGetEnum

Gets the enum value for a particular option in the database.

Synopsis

#include "petscsys.h"   
PetscErrorCode PetscOptionsGetEnum(PetscOptions options, const char pre[], const char opt[], const char *const *list, PetscEnum *value, PetscBool *set)

Not Collective

Input Parameters

• options - options database, use NULL for default global database

• pre - option prefix or NULL

• opt - option name

• list - array containing the list of choices, followed by the enum name, followed by the enum prefix, followed by a null

Output Parameters

• value - the value to return

• set - PETSC_TRUE if found, else PETSC_FALSE

Notes

If the user does not supply the option value is NOT changed. Thus you should ALWAYS initialize value if you access it without first checking that the set flag is true.

list is usually something like PCASMTypes or some other predefined list of enum names

See Also

PetscOptionsGetReal(), PetscOptionsHasName(), PetscOptionsGetString(), PetscOptionsGetInt(), PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsBool() PetscOptionsInt(), PetscOptionsString(), PetscOptionsReal(), PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHeadBegin(), PetscOptionsStringArray(), PetscOptionsRealArray(), PetscOptionsScalar(), PetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(), PetscOptionsFList(), PetscOptionsEList(), PetscOptionsGetEList(), PetscOptionsEnum()

Level

beginner

Location

src/sys/objects/options.c

Examples

src/mat/tutorials/ex10.c
src/sys/tutorials/ex8f90.F90

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