Function extern_spec_Sub_i8_i8_sub 

pub fn extern_spec_Sub_i8_i8_sub(self_: i8, rhs: i8) -> i8

extern spec for i8::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@