Function extern_spec_Sub__ref_i64__ref_i64_sub 

pub fn extern_spec_Sub__ref_i64__ref_i64_sub(self_: &i64, rhs: &i64) -> i64

extern spec for <&i64 as Sub<&i64>>::sub

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@