Reorganize files, Part 1 (#119)

* delete obselete files

* move files

* build

* update cmake

* update cmake

* fix build

* reorg examples

* update cmake for example and test

include/ck/utility/statically_indexed_array.hpp

@@ -0,0 +1,102 @@
+#ifndef CK_STATICALLY_INDEXED_ARRAY_HPP
+#define CK_STATICALLY_INDEXED_ARRAY_HPP
+
+#include "functional2.hpp"
+#include "sequence.hpp"
+#include "tuple.hpp"
+
+namespace ck {
+
+namespace detail {
+template <typename X, typename Y>
+struct tuple_concat;
+
+template <typename... Xs, typename... Ys>
+struct tuple_concat<Tuple<Xs...>, Tuple<Ys...>>
+{
+    using type = Tuple<Xs..., Ys...>;
+};
+
+template <typename T, index_t N>
+struct StaticallyIndexedArrayImpl
+{
+    using type =
+        typename tuple_concat<typename StaticallyIndexedArrayImpl<T, N / 2>::type,
+                              typename StaticallyIndexedArrayImpl<T, N - N / 2>::type>::type;
+};
+
+template <typename T>
+struct StaticallyIndexedArrayImpl<T, 0>
+{
+    using type = Tuple<>;
+};
+
+template <typename T>
+struct StaticallyIndexedArrayImpl<T, 1>
+{
+    using type = Tuple<T>;
+};
+} // namespace detail
+
+template <typename T, index_t N>
+using StaticallyIndexedArray = typename detail::StaticallyIndexedArrayImpl<T, N>::type;
+
+template <typename X, typename... Xs>
+__host__ __device__ constexpr auto make_statically_indexed_array(const X& x, const Xs&... xs)
+{
+    return StaticallyIndexedArray<X, sizeof...(Xs) + 1>(x, static_cast<X>(xs)...);
+}
+
+// make empty StaticallyIndexedArray
+template <typename X>
+__host__ __device__ constexpr auto make_statically_indexed_array()
+{
+    return StaticallyIndexedArray<X, 0>();
+}
+
+template <typename T, index_t N>
+struct StaticallyIndexedArray_v2
+{
+    __host__ __device__ constexpr StaticallyIndexedArray_v2() = default;
+
+    __host__ __device__ static constexpr index_t Size() { return N; }
+
+    // read access
+    template <index_t I>
+    __host__ __device__ constexpr const auto& At(Number<I>) const
+    {
+        static_assert(I < N, "wrong! out of range");
+
+        return data_[I];
+    }
+
+    // write access
+    template <index_t I>
+    __host__ __device__ constexpr auto& At(Number<I>)
+    {
+        static_assert(I < N, "wrong! out of range");
+
+        return data_[I];
+    }
+
+    // read access
+    template <index_t I>
+    __host__ __device__ constexpr const auto& operator[](Number<I> i) const
+    {
+        return At(i);
+    }
+
+    // write access
+    template <index_t I>
+    __host__ __device__ constexpr auto& operator()(Number<I> i)
+    {
+        return At(i);
+    }
+
+    __host__ __device__ static constexpr bool IsStaticBuffer() { return true; }
+
+    T data_[N];
+};
+
+} // namespace ck
+#endif