37 lines
481 B
C
37 lines
481 B
C
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#ifndef __HELPER_H__
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#define __HELPER_H__
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#include <math.h>
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#include <float.h>
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#include <vector>
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#include <algorithm>
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namespace
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{
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inline double Min_(double a, double b)
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{
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return (a<b) ? a : b;
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}
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}
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namespace Qwt3D
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{
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inline bool isPracticallyZero(double a, double b = 0)
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{
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if (!b)
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return (fabs (a) <= DBL_MIN);
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return (fabs (a - b) <= Min_(fabs(a), fabs(b))*DBL_EPSILON);
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}
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inline int round(double d)
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{
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return (d>0) ? int(d+0.5) : int(d-0.5);
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}
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} //ns
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#endif
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