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#ifndef HAVE_USEFUL_FUNCTIONS_HH
#define HAVE_USEFUL_FUNCTIONS_HH



template <class T>




inline T max (const T &x1, const T &x2)
{





  return (x1 >= x2) ? x1 : (x2 < x1) ? x2 : 0;
}

template <class T>
inline T min (const T &x1, const T &x2)
{
  return (x1 <= x2) ? x1 : (x2 > x1) ? x2 : 0;
}










inline Matrix
ones (const int r = 1, const int c = 1)
{
  Matrix m (r, c, 1.0);
  return m;
}



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#ifndef HAVE_USEFUL_FUNCTIONS_HH
#define HAVE_USEFUL_FUNCTIONS_HH


#ifdef __CPLUSPLUS
template <class class_t>
#else
#define inline			// strip from pre-processed file
#define class_t double
#endif // __CPLUSPLUS


// == Template functions ==

inline class_t
max (const class_t &x1, const class_t &x2)
{
  return ((x1 >= x2) ? x1 : (x1 < x2) ? x2 : 0);
}

inline class_t
min (const class_t &x1, const class_t &x2)
{
  return ((x1 <= x2) ? x1 : (x1 > x2) ? x2 : 0);
}

inline class_t
sign (const class_t &x)
{
  return ((x > 0) ? +1 : (x < 0) ? -1 : 0);
}


// == Octave functions ==

inline Matrix
ones (const int r = 1, const int c = 1)
{
  Matrix m (r, c, 1.0);
  return m;
}
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inline Matrix
zeros (const int r, const int c)
{
  Matrix m (r, c, 0.0);
  return m;
}

template <class T>
inline int
sign (T x)
{
  return
    (0 < x) ? +1 :
    (0 > x) ? -1 :
    0;
}

#endif // HAVE_USEFUL_FUNCTIONS_HH







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inline Matrix
zeros (const int r, const int c)
{
  Matrix m (r, c, 0.0);
  return m;
}











#endif // HAVE_USEFUL_FUNCTIONS_HH

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