type_traits.h

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#pragma once
 
namespace type_traits {
 
  // std::remove_reference. See https://en.cppreference.com/w/cpp/types/remove_reference.html
  template <typename T>
  struct remove_reference {
    using type = T;
  };
  template <typename T>
  struct remove_reference<T&> {
    using type = T;
  };
  template <typename T>
  struct remove_reference<T&&> {
    using type = T;
  };
 
}
// std::numeric_limits. See https://en.cppreference.com/w/cpp/types/numeric_limits
template <typename T>
struct numeric_limits {
  static constexpr T (max)(void);
};
 
template <>
struct numeric_limits<uint8_t> {
  static constexpr uint8_t (max)(void) { return UINT8_MAX; }
};
 
template <>
struct numeric_limits<int8_t> {
  static constexpr int8_t (max)(void) { return INT8_MAX; }
};
 
template <>
struct numeric_limits<uint16_t> {
  static constexpr uint16_t (max)(void) { return UINT16_MAX; }
};
 
template <>
struct numeric_limits<int16_t> {
  static constexpr int16_t (max)(void) { return INT16_MAX; }
};
 
template <>
struct numeric_limits<uint32_t> {
  static constexpr uint32_t (max)(void) { return UINT32_MAX; }
};
 
template <>
struct numeric_limits<int32_t> {
  static constexpr int32_t (max)(void) { return INT32_MAX; }
};