Add size.hpp utility for human-readable size formatting

include/fgl/size.hpp

@@ -0,0 +1,23 @@
+//
+// Created by kj16609 on 3/21/25.
+//
+#pragma once
+
+#include <cmath>
+#include <cstdint>
+#include <format>
+#include <string>
+
+namespace fgl::size
+{
+
+std::string toHuman( std::size_t size )
+{
+	constexpr std::size_t mod { 1024 };
+	if ( size < mod ) return std::format( "{}B", size );
+	if ( size < std::pow( mod, 2 ) ) return std::format( "{}KiB", static_cast< int >( size / mod ) );
+	if ( size < std::pow( mod, 3 ) ) return std::format( "{}MiB", static_cast< int >( size / std::pow( mod, 2 ) ) );
+	if ( size < std::pow( mod, 4 ) ) return std::format( "{}GiB", static_cast< int >( size / std::pow( mod, 3 ) ) );
+	return std::format( "{}TiB", static_cast< int >( size / std::pow( mod, 4 ) ) );
+}
+} // namespace fgl::size