source: pacpusframework/branches/2.0-beta1/include/extlib/qwtplot3d/qwt3d_helper.h@ 93

#ifndef __HELPER_H__
#define __HELPER_H__

#include <math.h>
#include <float.h>
#include <vector>
#include <algorithm>

namespace
{
        inline double Min_(double a, double b)
        {
                return (a<b) ? a : b;
        }
}

namespace Qwt3D
{

inline bool isPracticallyZero(double a, double b = 0)
{
  if (!b)
                return (fabs (a) <=  DBL_MIN);  

        return (fabs (a - b) <= Min_(fabs(a), fabs(b))*DBL_EPSILON);    
}
 
inline int round(double d)
{
        return (d>0) ? int(d+0.5) : int(d-0.5);
}


} //ns

#endif