/***********************************************************************//**
* @brief Write time reference into FITS header
*
* @param[in] hdu FITS extension.
*
* Writes or updates the time reference information in a FITS header.
* Depending of whether the keyword "MJDREF" or the pair of keywords "MJDREFI"
* and "MJDREFF" exist already in the header, the method either writes the
* reference MJD as floating point value, or split into an integer and a
* fractional part. If nothing has been written yet, splitting into an
* integer and fractional part will be used as this preserves the highest
* possible accuracy.
*
* The following additional keywords are written:
* TIMEUNIT
* TIMESYS
* TIMEREF
*
* Nothing is done if the HDU pointer is NULL.
***************************************************************************/
void GTimeReference::write(GFitsHDU* hdu) const
{
// Continue only if HDU is valid
if (hdu != NULL) {
// Case A: use floating point reference MJD
if (hdu->hascard("MJDREF")) {
hdu->card("MJDREF", mjdref(), "[days] Time reference MJD");
hdu->card("TIMEUNIT", timeunit(), "Time unit");
hdu->card("TIMESYS", timesys(), "Time system");
hdu->card("TIMEREF", timeref(), "Time reference");
}
// Case B: use fractional reference MJD
else {
hdu->card("MJDREFI", mjdrefi(), "[days] Integer part of time reference MJD");
hdu->card("MJDREFF", mjdreff(), "[days] Fractional part of time reference MJD");
hdu->card("TIMEUNIT", timeunit(), "Time unit");
hdu->card("TIMESYS", timesys(), "Time system");
hdu->card("TIMEREF", timeref(), "Time reference");
}
} // endif: HDU was valid
// Return
return;
}
//////////////////////////////////////////////////////////////////////
// Time Detail Functions
CWorldTimer::timeunit CWorldTimer::CTimeDetail::GetTimeUnit( void ) const
{
timeunit tuRet=0;
tuRet = m_dwDays*24*3600;
timeunit tuSecOfDay = timeunit(m_dwHours*3600) + m_dwMinutes*60 + m_dwSeconds;
tuRet += tuSecOfDay;
return tuRet;
}
/***********************************************************************//**
* @brief Print time reference
*
* @return String containing the time reference.
***************************************************************************/
std::string GTimeReference::print(void) const
{
// Initialise result string
std::string result;
// Append header
result.append("=== GTimeReference ===\n");
// Append information
result.append(parformat("MJD reference time")+str(mjdref())+"\n");
result.append(parformat("Time unit")+timeunit()+"\n");
result.append(parformat("Time system")+timesys()+"\n");
result.append(parformat("Time reference")+timeref()+"\n");
// Return
return result;
}
base_delayedcall(boost::asio::io_service &_io_service, int timeunitcount, handler _cb)
:io_service(_io_service),timer( new boost::asio::deadline_timer(io_service, timeunit(timeunitcount)))
{
BOOST_ASIO_WAIT_HANDLER_CHECK(handler, _cb) type_check;
timer->async_wait(boost::bind(*this, boost::function<void()>(_cb), _1));
}
