High-level bindings for C functions and values
foreign name typ exposes the C function of type
typ named by
an OCaml value.
true (defaults to
false), indicates that the
function should not raise an exception if
name is not found but return
an OCaml value that raises an exception when called.
nameis not found in
Construct a function pointer type from a function type.
The ctypes library, like C itself, distinguishes functions and function pointers. Functions are not first class: it is not possible to use them as arguments or return values of calls, or store them in addressable memory. Function pointers are first class, and so have none of these restrictions.
A closure passed to C was collected by the OCaml garbage collector before it was called.