#ifndef UTIL_TIME_POINT_2022_08_01_H
  #define UTIL_TIME_POINT_2022_08_01_H

  #include <chrono>

  #if(__cplusplus >= 201703L)
  namespace al::crypto::util {
  #else
  namespace al { namespace crypto { namespace util {
  #endif

  // Helper templates for selecting an exact unsigned
  // integral type based on a given number of bits.

  template<typename IntegralTimePointType,
           typename ClockType = std::chrono::high_resolution_clock>
  auto time_point() -> IntegralTimePointType
  {
    using local_integral_time_point_type = IntegralTimePointType;
    using local_clock_type               = ClockType;

    const auto current_now =
      static_cast<std::uintmax_t>
      (
        std::chrono::duration_cast<std::chrono::nanoseconds>
        (
          local_clock_type::now().time_since_epoch()
        ).count()
      );

    return static_cast<local_integral_time_point_type>(current_now);
  }

  #if(__cplusplus >= 201703L)
  } // namespace al::crypto::util
  #else
  } // namespace util
  } // namespace crypto
  } // namespace al
  #endif

#endif // UTIL_TIME_POINT_2022_08_01_H