Function extern_spec_Sub_Wrapping_i64_Wrapping_i64_sub 

pub fn extern_spec_Sub_Wrapping_i64_Wrapping_i64_sub(
    self_: Wrapping<i64>,
    rhs: Wrapping<i64>,
) -> Wrapping<i64>

extern spec for Wrapping<i64>::sub

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

ensures

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