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#define pi 3.14159 // Predefine pi
#ifndef HAVE_USEFUL_FUNCTIONS_HH
#define HAVE_USEFUL_FUNCTIONS_HH
#ifndef __cplusplus
#define inline /* strip */
typedef double doubleref_t;
#else
typedef double &doubleref_t;
max (const doubleref_t x1, const doubleref_t x2)
max (const double x1, const double x2)
{
return static_cast<double>((x1 >= x2) ? x1 : (x1 < x2) ? x2 : 0);
}
static inline double
min (const doubleref_t x1, const doubleref_t x2)
min (const double x1, const double x2)
{
return static_cast<double>((x1 <= x2) ? x1 : (x1 > x2) ? x2 : 0);
}
static inline double
nonsingular (const doubleref_t x)
nonsingular (const double x)
{
return static_cast<double>((x == 0) ? 1.0e-30 : x);
}
static inline double
sign (const doubleref_t x)
sign (const double x)
{
return static_cast<double>((x > 0) ? +1 : (x < 0) ? -1 : 0);
}
// Octave functions
#ifdef __cplusplus
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