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43 #ifndef __OPENCV_GPU_LIMITS_GPU_HPP__
44 #define __OPENCV_GPU_LIMITS_GPU_HPP__
50 namespace cv { namespace gpu { namespace device
53 template <class T> struct numeric_limits;
55 template <> struct numeric_limits<bool>
57 __device__ __forceinline__ static bool min() { return false; }
58 __device__ __forceinline__ static bool max() { return true; }
59 static const bool is_signed = false;
62 template <> struct numeric_limits<signed char>
64 __device__ __forceinline__ static signed char min() { return SCHAR_MIN; }
65 __device__ __forceinline__ static signed char max() { return SCHAR_MAX; }
66 static const bool is_signed = true;
69 template <> struct numeric_limits<unsigned char>
71 __device__ __forceinline__ static unsigned char min() { return 0; }
72 __device__ __forceinline__ static unsigned char max() { return UCHAR_MAX; }
73 static const bool is_signed = false;
76 template <> struct numeric_limits<short>
78 __device__ __forceinline__ static short min() { return SHRT_MIN; }
79 __device__ __forceinline__ static short max() { return SHRT_MAX; }
80 static const bool is_signed = true;
83 template <> struct numeric_limits<unsigned short>
85 __device__ __forceinline__ static unsigned short min() { return 0; }
86 __device__ __forceinline__ static unsigned short max() { return USHRT_MAX; }
87 static const bool is_signed = false;
90 template <> struct numeric_limits<int>
92 __device__ __forceinline__ static int min() { return INT_MIN; }
93 __device__ __forceinline__ static int max() { return INT_MAX; }
94 static const bool is_signed = true;
97 template <> struct numeric_limits<unsigned int>
99 __device__ __forceinline__ static unsigned int min() { return 0; }
100 __device__ __forceinline__ static unsigned int max() { return UINT_MAX; }
101 static const bool is_signed = false;
104 template <> struct numeric_limits<float>
106 __device__ __forceinline__ static float min() { return FLT_MIN; }
107 __device__ __forceinline__ static float max() { return FLT_MAX; }
108 __device__ __forceinline__ static float epsilon() { return FLT_EPSILON; }
109 static const bool is_signed = true;
112 template <> struct numeric_limits<double>
114 __device__ __forceinline__ static double min() { return DBL_MIN; }
115 __device__ __forceinline__ static double max() { return DBL_MAX; }
116 __device__ __forceinline__ static double epsilon() { return DBL_EPSILON; }
117 static const bool is_signed = true;
120 }}} // namespace cv { namespace gpu { namespace device {
122 #endif // __OPENCV_GPU_LIMITS_GPU_HPP__