cub::DivideAndRoundUp

template<typename NumeratorT, typename DenominatorT> constexpr NumeratorT cub::DivideAndRoundUp(NumeratorT n, DenominatorT d)

Divide n by d, round up if any remainder, and return the result.

Effectively performs (n + d - 1) / d, but is robust against the case where (n + d - 1) would overflow.