Pascal中的BigInteger(BigInteger in Pascal)

 Free Pascal中是否存在BigInteger类型？ 在Java和C＃中存在BigInteger和BigDecimal类型。 我如何在Pascal中编写我用Java编写的相同代码： 
 
package bigint;
import java.math.BigInteger;
/** 
 * @author Istvan
 */
public class bigint {

    public static void main(String[] args) {
        BigInteger a = new BigInteger("12345678913546876542545054683656469434");
        BigInteger b = new BigInteger("983435472457463464685743648468650354684046846841");

        BigInteger c = a.multiply(b);
        System.out.println("c="+c);
    }
}

Is there BigInteger type exists in Free Pascal? In Java and C# exists the type BigInteger and BigDecimal. How can I write the same code I have written in Java below in Pascal:
 
package bigint;
import java.math.BigInteger;
/** 
 * @author Istvan
 */
public class bigint {

    public static void main(String[] args) {
        BigInteger a = new BigInteger("12345678913546876542545054683656469434");
        BigInteger b = new BigInteger("983435472457463464685743648468650354684046846841");

        BigInteger c = a.multiply(b);
        System.out.println("c="+c);
    }
}

原文：https://stackoverflow.com/questions/18048142