Function extern_spec_PartialOrd_u64_u64_partial_cmp 

pub fn extern_spec_PartialOrd_u64_u64_partial_cmp(
    self_: &u64,
    rhs: &u64,
) -> Option<Ordering>

extern spec for u64::partial_cmp

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

terminates

ghost

ensures

result == Some((*self).deep_model().cmp_log((*rhs).deep_model()))