Function clingo_sys::clingo_symbolic_atoms_is_external

pub unsafe extern "C" fn clingo_symbolic_atoms_is_external(
    atoms: *const clingo_symbolic_atoms_t, 
    iterator: clingo_symbolic_atom_iterator_t, 
    external: *mut bool
) -> bool

Check whether an atom is external.

An atom is external if it has been defined using an external directive and has not been released or defined by a rule.

Parameters:

• atoms - the target
• iterator - iterator to the atom
• external - whether the atom is a external

Returns whether the call was successful