petsc-3.6.2 2015-10-02
   
PetscOptionsGetReal
Gets the double precision value for a particular option in the database. 
Synopsis
#include "petscsys.h"   
PetscErrorCode  PetscOptionsGetReal(const char pre[],const char name[],PetscReal *dvalue,PetscBool  *set)
Not Collective
Input Parameters
|  | 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