Add util::fixed_point formatter

libs/util/include/psemek/util/fixed_point.hpp

@@ -4,6 +4,7 @@
 #include <cstdint>
 #include <concepts>
 #include <limits>
+#include <format>
 
 namespace psemek::util
 {
@@ -455,3 +456,21 @@ namespace psemek::util
 	}
 
 }
+
+namespace std
+{
+
+	template <unsigned int I, unsigned int F, bool S, typename Char>
+	struct formatter<::psemek::util::fixed_point<I, F, S>, Char>
+		: formatter<double>
+	{
+		using base = formatter<double>;
+
+		template <typename FormatContext>
+		auto format(::psemek::util::fixed_point<I, F, S> const & fp, FormatContext & ctx) const
+		{
+			return base::format(static_cast<double>(fp), ctx);
+		}
+	};
+
+}