Fixed pointer to number converter for some systems.

Author: 5cript

include/interval-tree/draw.hpp

@@ -21,15 +21,15 @@ namespace lib_interval_tree
 {};
 
 template <>
-struct NumericalPointerEquivalent <sizeof(unsigned long)>
+struct NumericalPointerEquivalent <sizeof(std::uint32_t)>
 {
-using type = unsigned long;
+using type = uint32_t;
 };
 
 template <>
-struct NumericalPointerEquivalent <sizeof(unsigned long long)>
+struct NumericalPointerEquivalent <sizeof(std::uint64_t)>
 {
-using type = unsigned long long;
+using type = uint64_t;
 };
 
  template <typename... List>