[Quantlib-dev] Null class bug on x64 targets

[Kakhkhor A. <kab...@gm...>]

Null<Size> may not properly compile on x64 targets because. This
happened to me  with Intel C++ compiler. Proposal to change the Null
class with something like this.

//---------------------------------------------------------------------------
#include <ql/types.hpp>
#include <limits>
#include <boost/type_traits.hpp>

typedef double Real;

template <bool>
struct IntegerNull {
    static int value() {
        return std::numeric_limits<int>::max();
    }
};

template <>
struct IntegerNull<false> {
    static Real value() {
        return std::numeric_limits<Real>::max();
    }
};

template <typename T>
class Null {
public:
    Null() {}
    operator T() const {
        return T(IntegerNull<boost::is_floating_point<T>::value>::value());
    }
};
//---------------------------------------------------------------------------

Even better solution would be replace it with boost::optional but I
guess Null is needed for backward compatibility.

Regards,
Kakhkhor Abdijalilov.