File size: 2,126 Bytes
7fc5a59 | 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 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | #ifndef OPENPOSE_UTILITIES_MATH_HPP
#define OPENPOSE_UTILITIES_MATH_HPP
namespace op
{
// Use op::round/max/min for basic types (int, char, long, float, double, etc). Never with classes!
// `std::` alternatives uses 'const T&' instead of 'const T' as argument.
// E.g., std::round is really slow (~300 ms vs ~10 ms when I individually apply it to each element of a whole
// image array
// VERY IMPORTANT: These fast functions does NOT work for negative integer numbers.
// E.g., positiveIntRound(-180.f) = -179.
// Round functions
// Signed
template<typename T>
inline char positiveCharRound(const T a)
{
return char(a+0.5f);
}
template<typename T>
inline signed char positiveSCharRound(const T a)
{
return (signed char)(a+0.5f);
}
template<typename T>
inline int positiveIntRound(const T a)
{
return int(a+0.5f);
}
template<typename T>
inline long positiveLongRound(const T a)
{
return long(a+0.5f);
}
template<typename T>
inline long long positiveLongLongRound(const T a)
{
return (long long)(a+0.5f);
}
// Unsigned
template<typename T>
inline unsigned char uCharRound(const T a)
{
return (unsigned char)(a+0.5f);
}
template<typename T>
inline unsigned int uIntRound(const T a)
{
return (unsigned int)(a+0.5f);
}
template<typename T>
inline unsigned long ulongRound(const T a)
{
return (unsigned long)(a+0.5f);
}
template<typename T>
inline unsigned long long uLongLongRound(const T a)
{
return (unsigned long long)(a+0.5f);
}
// Max/min functions
template<typename T>
inline T fastMax(const T a, const T b)
{
return (a > b ? a : b);
}
template<typename T>
inline T fastMin(const T a, const T b)
{
return (a < b ? a : b);
}
template<class T>
inline T fastTruncate(T value, T min = 0, T max = 1)
{
return fastMin(max, fastMax(min, value));
}
}
#endif // OPENPOSE_UTILITIES_MATH_HPP
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