#ifndef _Functions4U_Defs_h_
#define _Functions4U_Defs_h_

#include <cmath>
#include <complex>
#include <limits>

namespace Upp {

#ifdef PLATFORM_WIN32
inline bool IsNum(const double &n) { return !std::isnan(n) && !std::isinf(n) && !IsNull(n); }
inline bool IsNum(const float  &n) { return !std::isnan(n) && !std::isinf(n); }
#else
inline bool IsNum(const double &n) { return !__builtin_isnan(n) && !__builtin_isinf(n) && !IsNull(n); }
inline bool IsNum(const float  &n) { return !__builtin_isnan(n) && !__builtin_isinf(n); }
#endif

inline bool IsNum(const int &n) { return !IsNull(n); }

template <typename T>
inline bool IsNum(const std::complex<T> &n) {
    return !(!IsNum(n.real()) || !IsNum(n.imag()));
}

template <typename T>
bool IsNull(const std::complex<T> &d) { return !IsNum(d); };

#define NaNComplex std::complex<double>(std::numeric_limits<double>::quiet_NaN(), std::numeric_limits<double>::quiet_NaN())
#define NaNDouble  std::numeric_limits<double>::quiet_NaN()

template <typename T>
inline std::complex<T> i() { return std::complex<T>(0, 1); };

template <typename T>
inline bool IsNum(const Point_<T> &n) { return IsNum(n.x) && IsNum(n.y); }

}
#endif