boost::multi::operator<

constexpr
auto
operator<(
    intersecting_range const& self,
    IndexType last);

bool
operator<(
    iterator const& self,
    iterator const& other) noexcept;

constexpr
auto
operator<(
    iterator const& self,
    iterator const& other);

constexpr
auto
operator<(
    iterator const& self,
    iterator const& other);

constexpr
auto
operator<(
    iterator const& self,
    iterator const& other);

constexpr
bool
operator<(
    const_subarray const& self,
    const_subarray const& other);