Calculator.Calculation.java Source code

Introduction

Here is the source code for Calculator.Calculation.java

Source

/*
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 */
package Calculator;

import org.apache.commons.math3.fraction.Fraction;
import org.apache.commons.math3.fraction.FractionFormat;

/**
 *
 * @author Thien
 */
public class Calculation {

    public static double fractionToDouble(String fraction) {
        fraction = fraction.trim();
        if (fraction.equals("Infinity")) {
            return Double.POSITIVE_INFINITY;
        }
        FractionFormat ff = new FractionFormat();
        Fraction fraction_a = ff.parse(fraction);
        return fraction_a.doubleValue();
    }

    public static double plus(String a, String b) {
        a = a.trim();
        b = b.trim();
        FractionFormat ff = new FractionFormat();
        Fraction fraction_a = ff.parse(a);
        Fraction fraction_b = ff.parse(b);
        double d = fraction_a.doubleValue() + fraction_b.doubleValue();
        return d;
    }

    public static double minus(String a, String b) {
        a = a.trim();
        b = b.trim();
        FractionFormat ff = new FractionFormat();
        Fraction fraction_a = ff.parse(a);
        Fraction fraction_b = ff.parse(b);
        double d = fraction_a.doubleValue() - fraction_b.doubleValue();
        return d;
    }

    public static double mul(String a, String b) {
        a = a.trim();
        b = b.trim();
        FractionFormat ff = new FractionFormat();
        Fraction fraction_a = ff.parse(a);
        Fraction fraction_b = ff.parse(b);
        double d = fraction_a.doubleValue() * fraction_b.doubleValue();
        return d;
    }

    public static double div(String a, String b) {
        a = a.trim();
        b = b.trim();
        FractionFormat ff = new FractionFormat();
        Fraction fraction_a = ff.parse(a);
        Fraction fraction_b = ff.parse(b);
        int c = Double.compare(fraction_b.doubleValue(), 0);
        double d = fraction_a.doubleValue() / fraction_b.doubleValue();
        return d;
    }
}