- Documentation
- Reference manual
- Foreign Language Interface
- The Foreign Include File
- Unifying data
- PL_unify()
- PL_unify_atom()
- PL_unify_bool()
- PL_unify_chars()
- PL_unify_atom_chars()
- PL_unify_list_chars()
- PL_unify_string_chars()
- PL_unify_integer()
- PL_unify_int64()
- PL_unify_uint64()
- PL_unify_float()
- PL_unify_pointer()
- PL_unify_functor()
- PL_unify_compound()
- PL_unify_list()
- PL_unify_nil()
- PL_unify_arg()
- PL_unify_term()
- PL_chars_to_term()
- PL_wchars_to_term()
- PL_quote()
- Unifying data
- The Foreign Include File
- Foreign Language Interface
- Packages
- Reference manual
Availability:C-language interface function
false or true,
according to whether a is zero or non-zero. If t
is instantiated, off and on are also accepted.