data Char = C# Char#
+data Int = I# Int#
+-- ^A fixed-precision integer type with at least the range @[-2^29 .. 2^29-1]@.
+-- The exact range for a given implementation can be determined by using
+-- 'Prelude.minBound' and 'Prelude.maxBound' from the 'Prelude.Bounded' class.
+
+-- | Single-precision floating point numbers.
+-- It is desirable that this type be at least equal in range and precision
+-- to the IEEE single-precision type.
+data Float = F# Float#
+
+-- | Double-precision floating point numbers.
+-- It is desirable that this type be at least equal in range and precision
+-- to the IEEE double-precision type.
+data Double = D# Double#
+