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#ifndef HAVE_USEFUL_FUNCTIONS_HH
#define HAVE_USEFUL_FUNCTIONS_HH
#ifdef __CPLUSPLUS
template <class T>
inline T max (const T &x1, const T &x2)
{
return (x1 >= x2) ? x1 : (x2 < x1) ? x2 : 0;
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);
}
template <class T>
inline T min (const T &x1, const T &x2)
return (x1 <= x2) ? x1 : (x2 > x1) ? x2 : 0;
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;
}
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