PETSc version 3.16.6
PetscOptionsSetValue
Sets an option name-value pair in the options database, overriding whatever is already present.
Synopsis
#include "petscsys.h"
PetscErrorCode PetscOptionsSetValue(PetscOptions options,const char name[],const char value[])
Logically Collective
Input Parameters
| options | - options database, use NULL for the default global database
|
| name | - name of option, this SHOULD have the - prepended
|
| value | - the option value (not used for all options, so can be NULL)
|
Note
This function can be called BEFORE PetscInitialize()
The collectivity of this routine is complex; only the MPI processes that call this routine will
have the affect of these options. If some processes that create objects call this routine and others do
not the code may fail in complicated ways because the same parallel solvers may incorrectly use different options
on different ranks.
Developers Note: Uses malloc() directly because PETSc may not be initialized yet.
See Also
PetscOptionsInsert(), PetscOptionsClearValue()
Level
intermediate
Location
src/sys/objects/options.c
Examples
src/sys/tutorials/ex16.c.html
src/sys/tutorials/ex16f.F90.html
src/vec/vec/tutorials/ex5.c.html
src/vec/vec/tutorials/ex10.c.html
src/vec/vec/tutorials/ex5f.F90.html
src/dm/impls/stag/tutorials/ex4.c.html
src/snes/tutorials/ex30.c.html
src/tao/unconstrained/tutorials/eptorsion1.c.html
src/tao/unconstrained/tutorials/rosenbrock1.c.html
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages