287     constexpr auto subspan = span.first<0>();  in TEST()  local
294     constexpr auto subspan = span.first<1>();  in TEST()  local
302     constexpr auto subspan = span.first<2>();  in TEST()  local
311     constexpr auto subspan = span.first<3>();  in TEST()  local
326     constexpr auto subspan = span.last<0>();  in TEST()  local
333     constexpr auto subspan = span.last<1>();  in TEST()  local
341     constexpr auto subspan = span.last<2>();  in TEST()  local
350     constexpr auto subspan = span.last<3>();  in TEST()  local
365     constexpr auto subspan = span.subspan<0>();  in TEST()  local
375     constexpr auto subspan = span.subspan<1>();  in TEST()  local
384     constexpr auto subspan = span.subspan<2>();  in TEST()  local
392     constexpr auto subspan = span.subspan<3>();  in TEST()  local
399     constexpr auto subspan = span.subspan<0, 0>();  in TEST()  local
406     constexpr auto subspan = span.subspan<1, 0>();  in TEST()  local
413     constexpr auto subspan = span.subspan<2, 0>();  in TEST()  local
420     constexpr auto subspan = span.subspan<0, 1>();  in TEST()  local
428     constexpr auto subspan = span.subspan<1, 1>();  in TEST()  local
436     constexpr auto subspan = span.subspan<2, 1>();  in TEST()  local
444     constexpr auto subspan = span.subspan<0, 2>();  in TEST()  local
453     constexpr auto subspan = span.subspan<1, 2>();  in TEST()  local
462     constexpr auto subspan = span.subspan<0, 3>();  in TEST()  local
477     auto subspan = span.first<0>();  in TEST()  local
484     auto subspan = span.first<1>();  in TEST()  local
492     auto subspan = span.first<2>();  in TEST()  local
501     auto subspan = span.first<3>();  in TEST()  local
516     auto subspan = span.last<0>();  in TEST()  local
523     auto subspan = span.last<1>();  in TEST()  local
531     auto subspan = span.last<2>();  in TEST()  local
540     auto subspan = span.last<3>();  in TEST()  local
555     auto subspan = span.subspan<0>();  in TEST()  local
565     auto subspan = span.subspan<1>();  in TEST()  local
574     auto subspan = span.subspan<2>();  in TEST()  local
582     auto subspan = span.subspan<3>();  in TEST()  local
589     auto subspan = span.subspan<0, 0>();  in TEST()  local
596     auto subspan = span.subspan<1, 0>();  in TEST()  local
603     auto subspan = span.subspan<2, 0>();  in TEST()  local
610     auto subspan = span.subspan<0, 1>();  in TEST()  local
618     auto subspan = span.subspan<1, 1>();  in TEST()  local
626     auto subspan = span.subspan<2, 1>();  in TEST()  local
634     auto subspan = span.subspan<0, 2>();  in TEST()  local
643     auto subspan = span.subspan<1, 2>();  in TEST()  local
652     auto subspan = span.subspan<0, 3>();  in TEST()  local
667     auto subspan = span.first(0);  in TEST()  local
673     auto subspan = span.first(1);  in TEST()  local
680     auto subspan = span.first(2);  in TEST()  local
688     auto subspan = span.first(3);  in TEST()  local
702     auto subspan = span.last(0);  in TEST()  local
708     auto subspan = span.last(1);  in TEST()  local
715     auto subspan = span.last(2);  in TEST()  local
723     auto subspan = span.last(3);  in TEST()  local
737     auto subspan = span.subspan(0);  in TEST()  local
746     auto subspan = span.subspan(1);  in TEST()  local
754     auto subspan = span.subspan(2);  in TEST()  local
761     auto subspan = span.subspan(3);  in TEST()  local
767     auto subspan = span.subspan(0, 0);  in TEST()  local
773     auto subspan = span.subspan(1, 0);  in TEST()  local
779     auto subspan = span.subspan(2, 0);  in TEST()  local
785     auto subspan = span.subspan(0, 1);  in TEST()  local
792     auto subspan = span.subspan(1, 1);  in TEST()  local
799     auto subspan = span.subspan(2, 1);  in TEST()  local
806     auto subspan = span.subspan(0, 2);  in TEST()  local
814     auto subspan = span.subspan(1, 2);  in TEST()  local
822     auto subspan = span.subspan(0, 3);  in TEST()  local
1151   constexpr span<const int> subspan =  in TEST()  local