Create make_signed.hpp

Author: LB--

tmp-make_signed/make_signed.hpp

@@ -0,0 +1,17 @@
+#ifndef TemplateMetaprogramming_MakeSigned_HeaderPlusPlus
+#define TemplateMetaprogramming_MakeSigned_HeaderPlusPlus
+
+#include <type_traits>
+#include "identity.hpp" //see ../tmp-identity/
+
+#include <type_traits>
+
+template<typename T>
+using make_signed = typename std::conditional
+<
+	std::is_integral<T>::value,
+	std::make_signed<T>,
+	identity<T>
+>::type;
+
+#endif