/*
GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org
This file is part of GeoGebra.
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.
*/
/*
* Area of polygon P[0], ..., P[n]
*
*/
package org.geogebra.common.kernel.algos;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.arithmetic.MyDouble;
import org.geogebra.common.kernel.commands.Commands;
import org.geogebra.common.kernel.geos.GeoNumberValue;
/**
* Computes Div[a, b]
*
* @author Markus Hohenwarter
*/
public class AlgoDiv extends AlgoTwoNumFunction {
public AlgoDiv(Construction cons, String label, GeoNumberValue a,
GeoNumberValue b) {
super(cons, label, a, b);
}
@Override
public Commands getClassName() {
return Commands.Div;
}
// calc area of conic c
@Override
public final void compute() {
if (input[0].isDefined() && input[1].isDefined()) {
double numerator = Kernel.checkInteger(a.getDouble());
double denominator = Kernel.checkInteger(b.getDouble());
if (Math.abs(numerator) > MyDouble.LARGEST_INTEGER
|| Math.abs(denominator) > MyDouble.LARGEST_INTEGER) {
num.setUndefined();
return;
}
double fraction = numerator / denominator;
double integer = Math.round(fraction);
if (Kernel.isEqual(fraction, integer)) {
num.setValue(integer);
} else if (denominator > 0) {
double div = Math.floor(fraction);
num.setValue(div);
} else {
double div = Math.ceil(fraction);
num.setValue(div);
}
} else {
num.setUndefined();
}
}
}