Why std::round offer versions returning long and long long and std::floor, std::ceil, std::trunc don't?

I was looking a these related families of standard functions in cppreference: std::round, std::floor, std::ceil and std::trunc.

Is there any reason why std::round is the only one providing specific signatures for long and long long as return type? I am struggling to think at any reason other than historical, but std::round has been added fairly recently with C++11.