The following programs hang:
==== floatValue ====
import java.lang.Bignum;
class java_lang_Bignum_floatValue {
  public static void main(String args[]) {
    Bignum b1=new Bignum("-0.0123456789012345678901234567890123456789");
    System.out.println(b1.floatValue());
  }
}
==== doubleValue ====
import java.lang.Bignum;
class java_lang_Bignum_doubleValue {
  public static void main(String args[]) {
    Bignum b1=new Bignum("-0.0123456789012345678901234567890123456789");
    System.out.println(b1.doubleValue());
  }
}