HiStrng.h

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#ifndef HiStrng_h
#define HiStrng_h

extern "C" { void* histrng_address_(void); }
class HiStrng {
public:
    HiStrng();
    ~HiStrng();
    
    int&      nfp (int i, int j);
    float&    pp  (int i, int j);
    int&      nft (int i, int j);
    float&    pt  (int i, int j);
    
    void  init  (void);

    // return common array lengths
    inline int  lenI() const {return _lenI;}
    inline int  lenJ() const {return _lenJ;}

private: 

    // Lengths of array in HiMain2 common
    static const int _lenI  = 300;
    static const int _lenJ  = 15;

    struct HISTRNG;
    friend struct HISTRNG;

    struct HISTRNG
    {
  int nfp [_lenJ][_lenI];
  float   pp  [_lenJ][_lenI];
  int nft [_lenJ][_lenI];
  float   pt  [_lenJ][_lenI];
    };

    int  _dummy;
    float  _realdummy;

    static HISTRNG* _histrng;
};

// set pointer to zero at start
HiStrng::HISTRNG* HiStrng::_histrng =0;

inline void
HiStrng::init(void)
{ if (!_histrng) _histrng = static_cast<HISTRNG*>(histrng_address_()); }

// Constructor
inline
HiStrng::HiStrng()
    : _dummy    (-999),
      _realdummy  (-999.)
{}

// Destructor
inline
HiStrng::~HiStrng()
{}

inline int&
HiStrng::nfp  (int i, int j)
{
    init(); // check COMMON is initialized
    if( i < 1 || i > lenI() ||
  j < 1 || j > lenJ() ) return _dummy;

    return _histrng->nfp[j-1][i-1];
}

inline float&
HiStrng::pp (int i, int j)
{
    init(); // check COMMON is initialized
    if( i < 1 || i > lenI() ||
  j < 1 || j > lenJ() ) return _realdummy;

    return _histrng->pp[j-1][i-1];
}

inline int&
HiStrng::nft  (int i, int j)
{
    init(); // check COMMON is initialized
    if( i < 1 || i > lenI() ||
  j < 1 || j > lenJ() ) return _dummy;

    return _histrng->nft[j-1][i-1];
}

inline float&
HiStrng::pt (int i, int j)
{
    init(); // check COMMON is initialized
    if( i < 1 || i > lenI() ||
  j < 1 || j > lenJ() ) return _realdummy;

    return _histrng->pt[j-1][i-1];
}

#endif