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#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
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