wid2isample() [1/2]

long int sff::wid2isample	(	const WID2 &	wid2,
		const libtime::TAbsoluteTime &	idate
	)

return index for sample at given date

return index offset of sample at idate

Definition at line 44 of file wid2isample.cc.

References sff::WID2::date, and sff::WID2::dt.

  {
    libtime::TRelativeTime dt=libtime::double2time(wid2.dt);
    long int retval=(idate-wid2.date)/dt;
    if (idate<wid2.date) retval *= -1;
    return(retval);
  }