Function extern_spec_Add_i128_i128_add 

pub fn extern_spec_Add_i128_i128_add(self_: i128, rhs: i128) -> i128

extern spec for i128::add

This is not a real function: its only use is for documentation.

requires

$type::MIN@ <= self@ $op rhs@ && self@ $op rhs@ <= $type::MAX@

ensures

result@ == self@ $op rhs@