/* XXL: The eXtensible and fleXible Library for data processing
Copyright (C) 2000-2011 Prof. Dr. Bernhard Seeger
Head of the Database Research Group
Department of Mathematics and Computer Science
University of Marburg
Germany
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; If not, see <http://www.gnu.org/licenses/>.
http://code.google.com/p/xxl/
*/
package xxl.core.math.functions;
/**
* Classes implementing this interface are either analytically or numerically
* integrable, i.e., the primitive or an approximation of it
* can be computed by calling the method <code>primitive</code>. The primitive
* is returned as a {@link xxl.core.math.functions.RealFunction real-valued function}.
*
* @see xxl.core.math.functions.RealFunction
* @see xxl.core.math.functions.RealFunctionArea
* @see xxl.core.math.numerics.integration.TrapezoidalRuleRealFunctionArea
* @see xxl.core.math.numerics.integration.SimpsonsRuleRealFunctionArea
*/
public interface Integrable {
/** Returns the primitive of the implementing class as
* a {@link xxl.core.math.functions.RealFunction real-valued function}.
*
* @return primitive as {@link xxl.core.math.functions.RealFunction}
*/
public abstract RealFunction primitive();
}