opencv/modules/gpu/include/opencv2/gpu/device/limits.hpp

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#ifndef __OPENCV_GPU_LIMITS_GPU_HPP__
#define __OPENCV_GPU_LIMITS_GPU_HPP__

#include <limits>
#include "common.hpp"

namespace cv { namespace gpu { namespace device
{
    template<class T> struct numeric_limits
    {
        typedef T type;
        __device__ __forceinline__ static type min()  { return type(); };
        __device__ __forceinline__ static type max() { return type(); };
        __device__ __forceinline__ static type epsilon() { return type(); }
        __device__ __forceinline__ static type round_error() { return type(); }
        __device__ __forceinline__ static type denorm_min()  { return type(); }
        __device__ __forceinline__ static type infinity() { return type(); }
        __device__ __forceinline__ static type quiet_NaN() { return type(); }
        __device__ __forceinline__ static type signaling_NaN() { return T(); }
        static const bool is_signed;
    };

    template<> struct numeric_limits<bool>
    {
        typedef bool type;
        __device__ __forceinline__ static type min() { return false; };
        __device__ __forceinline__ static type max() { return true;  };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = false;
    };

    template<> struct numeric_limits<char>
    {
        typedef char type;
        __device__ __forceinline__ static type min() { return CHAR_MIN; };
        __device__ __forceinline__ static type max() { return CHAR_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = (char)-1 == -1;
    };

    template<> struct numeric_limits<signed char>
    {
        typedef char type;
        __device__ __forceinline__ static type min() { return SCHAR_MIN; };
        __device__ __forceinline__ static type max() { return SCHAR_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = (signed char)-1 == -1;
    };

    template<> struct numeric_limits<unsigned char>
    {
        typedef unsigned char type;
        __device__ __forceinline__ static type min() { return 0; };
        __device__ __forceinline__ static type max() { return UCHAR_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = false;
    };

    template<> struct numeric_limits<short>
    {
        typedef short type;
        __device__ __forceinline__ static type min() { return SHRT_MIN; };
        __device__ __forceinline__ static type max() { return SHRT_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = true;
    };

    template<> struct numeric_limits<unsigned short>
    {
        typedef unsigned short type;
        __device__ __forceinline__ static type min() { return 0; };
        __device__ __forceinline__ static type max() { return USHRT_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = false;
    };

    template<> struct numeric_limits<int>
    {
        typedef int type;
        __device__ __forceinline__ static type min() { return INT_MIN; };
        __device__ __forceinline__ static type max() { return INT_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = true;
    };


    template<> struct numeric_limits<unsigned int>
    {
        typedef unsigned int type;
        __device__ __forceinline__ static type min() { return 0; };
        __device__ __forceinline__ static type max() { return UINT_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = false;
    };

    template<> struct numeric_limits<long>
    {
        typedef long type;
        __device__ __forceinline__ static type min() { return LONG_MIN; };
        __device__ __forceinline__ static type max() { return LONG_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = true;
    };

    template<> struct numeric_limits<unsigned long>
    {
        typedef unsigned long type;
        __device__ __forceinline__ static type min() { return 0; };
        __device__ __forceinline__ static type max() { return ULONG_MAX; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = false;
    };

    template<> struct numeric_limits<float>
    {
        typedef float type;
        __device__ __forceinline__ static type min() { return 1.175494351e-38f/*FLT_MIN*/; };
        __device__ __forceinline__ static type max() { return 3.402823466e+38f/*FLT_MAX*/; };
        __device__ __forceinline__ static type epsilon() { return 1.192092896e-07f/*FLT_EPSILON*/; };
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = true;
    };

    template<> struct numeric_limits<double>
    {
        typedef double type;
        __device__ __forceinline__ static type min() { return 2.2250738585072014e-308/*DBL_MIN*/; };
        __device__ __forceinline__ static type max() { return 1.7976931348623158e+308/*DBL_MAX*/; };
        __device__ __forceinline__ static type epsilon();
        __device__ __forceinline__ static type round_error();
        __device__ __forceinline__ static type denorm_min();
        __device__ __forceinline__ static type infinity();
        __device__ __forceinline__ static type quiet_NaN();
        __device__ __forceinline__ static type signaling_NaN();
        static const bool is_signed = true;
    };
}}} // namespace cv { namespace gpu { namespace device {

#endif // __OPENCV_GPU_LIMITS_GPU_HPP__