#include "petscsys.h" PetscErrorCode PetscOptionsFindPair(PetscOptions options,const char pre[],const char name[],const char *value[],PetscBool *set)Not Collective
| options | - options database, use NULL for the default global database | |
| pre | - the string to prepend to the name or NULL, this SHOULD NOT have the "-" prepended | |
| name | - name of option, this SHOULD have the "-" prepended |
| value | - the option value (optional, not used for all options) | |
| set | - whether the option is set (optional) |