gnss_week.hpp

Go to the documentation of this file.

#pragma once
 
#include "scales/scales.hpp"
#include "time_base.hpp"
 
#include <cstdint>
#include <type_traits>
 
namespace tempoch {
 
template <typename S> struct is_gnss_scale : std::false_type {};
template <> struct is_gnss_scale<scale::GPST> : std::true_type {};
template <> struct is_gnss_scale<scale::GST> : std::true_type {};
template <> struct is_gnss_scale<scale::BDT> : std::true_type {};
template <> struct is_gnss_scale<scale::QZSST> : std::true_type {};
 
template <typename S> inline constexpr bool is_gnss_scale_v = is_gnss_scale<S>::value;
 
struct GnssWeek {
  std::uint32_t week;
  std::uint32_t seconds_of_week;
  std::uint32_t subsecond_nanos;
};
 
template <typename S, std::enable_if_t<is_gnss_scale_v<S>, int> = 0>
inline GnssWeek to_gnss_week(const Time<S> &time) {
  TempochGnssWeek raw{};
  check_status(
      tempoch_time_to_gnss_week(time.c_inner(), static_cast<int32_t>(scale_tag_v<S>), &raw),
      "tempoch::to_gnss_week");
  return GnssWeek{raw.week, raw.seconds_of_week, raw.subsecond_nanos};
}
 
template <typename S, std::enable_if_t<is_gnss_scale_v<S>, int> = 0>
inline Time<S> from_gnss_week(const GnssWeek &gw) {
  TempochGnssWeek raw{gw.week, gw.seconds_of_week, gw.subsecond_nanos};
  tempoch_time_t out{};
  check_status(tempoch_time_from_gnss_week(raw, static_cast<int32_t>(scale_tag_v<S>), &out),
               "tempoch::from_gnss_week");
  return Time<S>::from_split_seconds(qtty::Second(out.hi_seconds), qtty::Second(out.lo_seconds));
}
 
} // namespace tempoch