Function extern_spec_Sub__ref_u64__ref_u64_sub 

pub fn extern_spec_Sub__ref_u64__ref_u64_sub(self_: &u64, rhs: &u64) -> u64

extern spec for <&u64 as Sub<&u64>>::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@