Summation.java

/*
 * Copyright (c) 2013, SRI International
 * All rights reserved.
 * Licensed under the The BSD 3-Clause License;
 * you may not use this file except in compliance with the License.
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package com.sri.ai.util.rangeoperation.library.rangeoperations;

import com.google.common.annotations.Beta;
import com.sri.ai.util.rangeoperation.api.Range;
import com.sri.ai.util.rangeoperation.core.DefaultRangeOperation;
import com.sri.ai.util.rangeoperation.library.operators.Sum;
import com.sri.ai.util.rangeoperation.library.ranges.IntegerRange;

/**
 * A summation range operation over numbers.
 * TODO: extend it to arbitrarily nested lists of numbers.
 * 
 * @author braz
 */
@Beta
public class Summation extends DefaultRangeOperation<Number, Number> {
	@SuppressWarnings("unchecked")
	public Summation(String name, final int first, final int last, final int step) {
		super(new Sum(), (Range) new IntegerRange(name, first, last));
	}
	
	public Summation(String name, final int first, final int last) {
		this(name, first, last, 1);
	}
}