etsi_its_messages v3.5.0
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mcm_utils.h
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1// SPDX-License-Identifier: MIT
2// Copyright Institute for Automotive Engineering (ika), RWTH Aachen University
3
8
9#include <etsi_its_msgs_utils/impl/checks.h>
10#include <etsi_its_msgs_utils/impl/constants.h>
11
12#ifndef ETSI_ITS_MSGS_UTILS_IMPL_MCM_MCM_UTILS_H
13#define ETSI_ITS_MSGS_UTILS_IMPL_MCM_MCM_UTILS_H
14
23inline uint64_t getUnixNanosecondsFromGenerationDeltaTime(
24 const GenerationDeltaTime& generation_delta_time, const uint64_t unix_timestamp_estimate,
25 const uint16_t n_leap_seconds = etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin()->second) {
26 uint64_t ms_estimate_after_utc_2004 =
27 unix_timestamp_estimate * 1e-6 + (uint64_t)(n_leap_seconds * 1e3) - etsi_its_msgs::UNIX_SECONDS_2004 * 1e3;
28 uint64_t ms_after_utc_2004 = std::floor(ms_estimate_after_utc_2004 / 65536) * 65536 + generation_delta_time.value;
29 return ms_after_utc_2004 * 1e6 + etsi_its_msgs::UNIX_SECONDS_2004 * 1e9 - n_leap_seconds * 1e9;
30}
31
32#endif // ETSI_ITS_MSGS_UTILS_IMPL_MCM_MCM_UTILS_H
checks.h
Sanity-check functions etc.
constants.h
File containing constants that are used in the context of ETIS ITS Messages.
etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004
const std::map< uint64_t, uint16_t > LEAP_SECOND_INSERTIONS_SINCE_2004
std::map that stores all leap second insertions since 2004 with the corresponding unix-date of the in...
Definition constants.h:22
getUnixNanosecondsFromGenerationDeltaTime
uint64_t getUnixNanosecondsFromGenerationDeltaTime(const GenerationDeltaTime &generation_delta_time, const uint64_t unix_timestamp_estimate, const uint16_t n_leap_seconds=etsi_its_msgs::LEAP_SECOND_INSERTIONS_SINCE_2004.rbegin() ->second)
Get the Unix Nanoseconds from Generation Delta Time object.
Definition mcm_utils.h:23