Function extern_spec_Sub_Wrapping_u128_Wrapping_u128_sub 

pub fn extern_spec_Sub_Wrapping_u128_Wrapping_u128_sub(
    self_: Wrapping<u128>,
    rhs: Wrapping<u128>,
) -> Wrapping<u128>

extern spec for Wrapping<u128>::sub

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

ensures

result.0 == self.0 - rhs.0