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// $Id: Interval.hh,v 1.3 2002/12/19 18:40:45 flaterco Exp $
// Interval: what you get if you subtract two timestamps.
/*
Copyright (C) 1998 David Flater.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
// Since XTide now roams outside of the minimal 1970 to 2037 epoch,
// 32 bits no longer suffice.
#define interval_rep_t long long
class Interval {
protected:
interval_rep_t seconds;
public:
Interval ();
Interval (interval_rep_t in_seconds);
// Takes meridian string of the form [-]HH:MM
Interval (const Dstr &in_meridian);
// Output value in various units.
interval_rep_t in_seconds () const;
// Convert seconds to Julian centuries (36525 days)
double in_Julian_centuries () const;
// Return in the form [-]HH:MM:SS
// void as_hhmmss (Dstr &hhmmss_out);
void operator -= (Interval a);
};
Angle operator* (Interval a, Speed b);
Angle operator* (Speed b, Interval a);
Interval operator* (Interval a, unsigned b);
Interval operator* (Interval a, double b);
Interval operator+ (Interval a, Interval b);
Interval operator- (Interval a, Interval b);
Interval abs (Interval a);
Interval operator- (Interval a);
int operator> (Interval a, Interval b);
int operator< (Interval a, Interval b);
int operator<= (Interval a, Interval b);
int operator== (Interval a, Interval b);
Interval operator/ (Interval a, int b);
double operator/ (Interval a, Interval b);
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