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package de.lmu.ifi.dbs.elki.data;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2011
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
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/>.
*/
/**
* An interface to define requirements for a number to perform arithmetic
* operations. The Numbers are supposed to remain unchanged by an arithmetic
* operation.
*
* @author Arthur Zimek
* @param <N> Number type
*/
public interface Arithmetic<N extends Number> extends Comparable<N> {
/**
* Adds the given number to this number.
*
* @param number the number to add to this number.
* @return the result of arithmetic addition of this Number with the given
* number
*/
public N plus(N number);
/**
* Multiplies this number with the given number.
*
* @param number the number to multiply this number with
* @return the result of arithmetic multiplication of this Number with the
* given number
*/
public N times(N number);
/**
* Subtracts the given number from this number.
*
* @param number the number to subtract from this number
* @return the result of arithmetic subtraction of the given number from this
* Number
*/
public N minus(N number);
/**
* Divides this number by the given number.
*
* @param number the number to divide this number by
* @return the result of arithmetic division of this Number by the given
* number
*/
public N divided(N number);
}
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