boost::gil::memunit_advanced

template<typename NonAlignedPixelReference>
bit_aligned_pixel_iterator<NonAlignedPixelReference>
memunit_advanced(
    bit_aligned_pixel_iterator<NonAlignedPixelReference> const& p,
    std::ptrdiff_t diff);

template<typename Iterator>
memory_based_step_iterator<Iterator>
memunit_advanced(
    memory_based_step_iterator<Iterator> const& p,
    std::ptrdiff_t diff);

template<typename P>
P*
memunit_advanced(
    P const* p,
    std::ptrdiff_t diff);

template<
    typename Iterator,
    typename DFn>
dereference_iterator_adaptor<Iterator, DFn>
memunit_advanced(
    dereference_iterator_adaptor<Iterator, DFn> const& p,
    std::iterator_traits<Iterator>::difference_type diff);

template<
    typename IC,
    typename C>
planar_pixel_iterator<IC, C>
memunit_advanced(
    planar_pixel_iterator<IC, C> const& p,
    std::ptrdiff_t diff);