root/modules/cudev/include/opencv2/cudev/util/limits.hpp

INCLUDED FROM

DEFINITIONS

1. min
2. max
3. min
4. max
5. min
6. max
7. min
8. max
9. min
10. max
11. min
12. max
13. min
14. max
15. min
16. max
17. epsilon
18. min
19. max
20. epsilon

/*M///////////////////////////////////////////////////////////////////////////////////////
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#pragma once

#ifndef __OPENCV_CUDEV_UTIL_LIMITS_HPP__
#define __OPENCV_CUDEV_UTIL_LIMITS_HPP__

#include <limits.h>
#include <float.h>
#include "../common.hpp"

namespace cv { namespace cudev {

//! @addtogroup cudev
//! @{

template <class T> struct numeric_limits;

template <> struct numeric_limits<bool>
{
    __device__ __forceinline__ static bool min() { return false; }
    __device__ __forceinline__ static bool max() { return true;  }
    static const bool is_signed = false;
};

template <> struct numeric_limits<schar>
{
    __device__ __forceinline__ static schar min() { return SCHAR_MIN; }
    __device__ __forceinline__ static schar max() { return SCHAR_MAX; }
    static const bool is_signed = true;
};

template <> struct numeric_limits<uchar>
{
    __device__ __forceinline__ static uchar min() { return 0; }
    __device__ __forceinline__ static uchar max() { return UCHAR_MAX; }
    static const bool is_signed = false;
};

template <> struct numeric_limits<short>
{
    __device__ __forceinline__ static short min() { return SHRT_MIN; }
    __device__ __forceinline__ static short max() { return SHRT_MAX; }
    static const bool is_signed = true;
};

template <> struct numeric_limits<ushort>
{
    __device__ __forceinline__ static ushort min() { return 0; }
    __device__ __forceinline__ static ushort max() { return USHRT_MAX; }
    static const bool is_signed = false;
};

template <> struct numeric_limits<int>
{
    __device__ __forceinline__ static int min() { return INT_MIN; }
    __device__ __forceinline__ static int max() { return INT_MAX; }
    static const bool is_signed = true;
};

template <> struct numeric_limits<uint>
{
    __device__ __forceinline__ static uint min() { return 0; }
    __device__ __forceinline__ static uint max() { return UINT_MAX; }
    static const bool is_signed = false;
};

template <> struct numeric_limits<float>
{
    __device__ __forceinline__ static float min() { return FLT_MIN; }
    __device__ __forceinline__ static float max() { return FLT_MAX; }
    __device__ __forceinline__ static float epsilon() { return FLT_EPSILON; }
    static const bool is_signed = true;
};

template <> struct numeric_limits<double>
{
    __device__ __forceinline__ static double min() { return DBL_MIN; }
    __device__ __forceinline__ static double max() { return DBL_MAX; }
    __device__ __forceinline__ static double epsilon() { return DBL_EPSILON; }
    static const bool is_signed = true;
};

//! @}

}}

#endif