w

1 files changed, 23 insertions, 0 deletions

diff --git a/compat/iota.hpp b/compat/iota.hpp
new file mode 100644
index 00000000..91ad759c
--- /dev/null
+++ b/compat/iota.hpp
@@ -0,0 +1,23 @@
+#pragma once
+#include <array>
+
+namespace floormat::detail {
+
+template<typename Type, size_t Count>
+std::array<Type, Count> constexpr iota_array_()
+{
+    static_assert( size_t(Type(Count)) == Count );
+    std::array<Type, Count> ret;
+    for (size_t i = 0; i < Count; i++)
+        ret[i] = Type(i);
+    return ret;
+}
+
+} // namespace floormat::detail
+
+namespace floormat {
+
+template<typename Type, size_t Count>
+constexpr inline std::array<Type, Count> iota_array = detail::iota_array_<Type, Count>();
+
+} // namespace floormat