Memcall is not touched yet. Otherwise this replaces sentinel error
values with IsX exported predicate functions. This enables more
effective error handling by the users and leaves much more freedom for
changing the implementation in the future without breaking API.
Memcall is not touched yet. Otherwise this replaces sentinel error values with IsX exported predicate functions. This enables more effective error handling by the users and leaves much more freedom for changing the implementation in the future without breaking API.
Updates #111