Foreign function interface out of date

[sebdumancic]

Hi,

could you update the information of the foreign function interface?
If I understand correctly, since 8.2.0 version, PL_register_foreign takes a function with the return with pl_function_t instead of foreign_t. The documentation and tests (here) do not reflect that change.

I would appreciate if you could give a small example of the correct usage. I tried to modify the hello example you provide, but unsuccessfully.

Thank you!

[daniel86]

for me it works to simply cast to pl_function_t

static foreign_t a_predicate(term_t arg0, term_t arg1)
{
    ....
}
....
PL_register_foreign("a_predicate", 2, (pl_function_t)a_predicate, 0);