Method init_common_iterator

include/pybind11/numpy.h:1941–1965

    using common_iter = common_iterator;

    void init_common_iterator(const buffer_info &buffer,
                              const container_type &shape,
                              common_iter &iterator,
                              container_type &strides) {
        auto buffer_shape_iter = buffer.shape.rbegin();
        auto buffer_strides_iter = buffer.strides.rbegin();
        auto shape_iter = shape.rbegin();
        auto strides_iter = strides.rbegin();

        while (buffer_shape_iter != buffer.shape.rend()) {
            if (*shape_iter == *buffer_shape_iter) {
                *strides_iter = *buffer_strides_iter;
            } else {
                *strides_iter = 0;
            }

            ++buffer_shape_iter;
            ++buffer_strides_iter;
            ++shape_iter;
            ++strides_iter;
        }

        std::fill(strides_iter, strides.rend(), 0);
        iterator = common_iter(buffer.ptr, strides, shape);
    }

    void increment_common_iterator(size_t dim) {
        for (auto &iter : m_common_iterator) {