petsc-3.7.5 2017-01-01
PetscOptionsGetReal
Gets the double precision value for a particular option in the database.
Synopsis
#include "petscsys.h"
PetscErrorCode PetscOptionsGetReal(PetscOptions options,const char pre[],const char name[],PetscReal *dvalue,PetscBool *set)
Not Collective
Input Parameters
| options | - options database use NULL for default global database
|
| pre | - string to prepend to each name or NULL
|
| name | - the option one is seeking
|
Output Parameter
Note: if the option is given but no value is provided then set is given the value PETSC_FALSE
See Also
PetscOptionsGetInt(), PetscOptionsHasName(),
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/ksp/ksp/examples/tutorials/ex11.c.html
src/ksp/ksp/examples/tutorials/ex43.c.html
src/ksp/ksp/examples/tutorials/ex54.c.html
src/ksp/ksp/examples/tutorials/ex55.c.html
src/ksp/ksp/examples/tutorials/ex11f.F.html
src/ksp/ksp/examples/tutorials/ex54f.F.html
src/snes/examples/tutorials/ex3.c.html
src/snes/examples/tutorials/ex5.c.html
src/snes/examples/tutorials/ex5s.c.html
src/snes/examples/tutorials/ex7.c.html