/usr/include/qwtplot3d-qt4/qwt3d_helper.h is in libqwtplot3d-qt4-dev 0.2.7+svn191-5ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | #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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