spatem_ts_utils.h File Reference

Utility functions for the ETSI ITS SPATEM. More...

#include <ctime>

Go to the source code of this file.

Functions
uint64_t	etsi_its_spatem_ts_msgs::access::getUnixSecondsOfYear (const uint64_t unixSecond)
	Get the unix seconds of the beginning of a year that corresponds to a given unix timestamp.
uint64_t	etsi_its_spatem_ts_msgs::access::getUnixNanosecondsFromMinuteOfTheYear (const MinuteOfTheYear &moy, const uint64_t unix_nanoseconds_estimate)
	Get the unix nanoseconds from MinuteOfTheYear object.

Detailed Description

Utility functions for the ETSI ITS SPATEM.

Definition in file spatem_ts_utils.h.

Function Documentation

getUnixNanosecondsFromMinuteOfTheYear()

uint64_t etsi_its_spatem_ts_msgs::access::getUnixNanosecondsFromMinuteOfTheYear ( const MinuteOfTheYear & moy, const uint64_t unix_nanoseconds_estimate )

inline

Get the unix nanoseconds from MinuteOfTheYear object.

Parameters

moy	given MinuteOfTheYear object
unix_nanoseconds_estimate	unix timestamp to derive the current year from in nanoseconds

Returns

uint64_t unix timestamp according to the given MinuteOfTheYear in nanoseconds

Definition at line 71 of file spatem_ts_utils.h.

                                                                                                                              {
    return ((uint64_t)(moy.value*60) + getUnixSecondsOfYear(unix_nanoseconds_estimate*1e-9))*1e9;
  }

getUnixSecondsOfYear()

uint64_t etsi_its_spatem_ts_msgs::access::getUnixSecondsOfYear ( const uint64_t unixSecond )

inline

Get the unix seconds of the beginning of a year that corresponds to a given unix timestamp.

Parameters

unixSecond

timestamp that defines the year for that the unix seconds for the beginning of the year should be derived

Returns

uint64_t unix seconds of the beginning of the year

Definition at line 46 of file spatem_ts_utils.h.

                                                                  {
 
    // Get current time as a time_point
    time_t ts = static_cast<time_t>(unixSecond); // Convert uint64_t to time_t
 
    struct tm* timeinfo;
    timeinfo = gmtime(&ts);
 
    // Set the timeinfo to the beginning of the year
    timeinfo->tm_sec = 0;
    timeinfo->tm_min = 0;
    timeinfo->tm_hour = 0;
    timeinfo->tm_mday = 1;
    timeinfo->tm_mon = 0;
 
    return timegm(timeinfo); // Convert struct tm back to Unix timestamp
  }