/*

    Zeitrechnung - a class library to determine calendar events
    Copyright (c) 1984-2022 Ulrich Hilger, http://uhilger.de

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */
package de.uhilger.zeitrechnung.kalender;

/**
 * Klassen, die Methoden zur Zeitrechnung im Kontext der Programmbibliothek 
 * Zeitrechnung liefern, muessen diese Schnittstelle implementieren
 * 
 * @author Ulrich Hilger
 * @version 2, 1.10.2022
 */
public interface Zeitrechnung {

  public long ganzzahlQuotient(double x, double y);
  
  public long modulo(long x, long y);

  public double modulo(double x, double y);

  public long tagNach(long datum, int t);

  public long tagAmOderNach(long datum, int t);

  public long wochentagVonGenerisch(long datum);

	public long nterTag(int n, int t, long datum);
  
	public long tagVor(long datum, int t);

	public long tagAmOderVor(long datum, int t);

	public long letzterTag(int t, long datum);
  
}