Function extern_spec_Sub_isize_isize_sub 

pub fn extern_spec_Sub_isize_isize_sub(self_: isize, rhs: isize) -> isize

extern spec for isize::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@