PetscErrorCode PetscDLLibrarySym(MPI_Comm comm,PetscDLLibrary *outlist,const char path,const char insymbol,void **value)Collective on MPI_Comm
|comm||- communicator that will open the library|
|outlist||- list of already open libraries that may contain symbol (can be NULL and only the executable is searched for the function)|
|path||- optional complete library name (if provided checks here before checking outlist)|
|insymbol||- name of symbol|
Notes: Symbol can be of the form [/path/libname[.so.1.0]:]functionname[()] where items in  denote optional
Will attempt to (retrieve and) open the library if it is not yet been opened.