1 /*M///////////////////////////////////////////////////////////////////////////////////////
2 //
3 //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
4 //
5 //  By downloading, copying, installing or using the software you agree to this license.
6 //  If you do not agree to this license, do not download, install,
7 //  copy or use the software.
8 //
9 //
10 //                          License Agreement
11 //                For Open Source Computer Vision Library
12 //
13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved.
15 // Copyright (C) 2013, OpenCV Foundation, all rights reserved.
16 // Third party copyrights are property of their respective owners.
17 //
18 // Redistribution and use in source and binary forms, with or without modification,
19 // are permitted provided that the following conditions are met:
20 //
21 //   * Redistribution's of source code must retain the above copyright notice,
22 //     this list of conditions and the following disclaimer.
23 //
24 //   * Redistribution's in binary form must reproduce the above copyright notice,
25 //     this list of conditions and the following disclaimer in the documentation
26 //     and/or other materials provided with the distribution.
27 //
28 //   * The name of the copyright holders may not be used to endorse or promote products
29 //     derived from this software without specific prior written permission.
30 //
31 // This software is provided by the copyright holders and contributors "as is" and
32 // any express or implied warranties, including, but not limited to, the implied
33 // warranties of merchantability and fitness for a particular purpose are disclaimed.
34 // In no event shall the Intel Corporation or contributors be liable for any direct,
35 // indirect, incidental, special, exemplary, or consequential damages
36 // (including, but not limited to, procurement of substitute goods or services;
37 // loss of use, data, or profits; or business interruption) however caused
38 // and on any theory of liability, whether in contract, strict liability,
39 // or tort (including negligence or otherwise) arising in any way out of
40 // the use of this software, even if advised of the possibility of such damage.
41 //
42 //M*/
43 
44 #pragma once
45 
46 #ifndef __OPENCV_CUDEV_UTIL_LIMITS_HPP__
47 #define __OPENCV_CUDEV_UTIL_LIMITS_HPP__
48 
49 #include <limits.h>
50 #include <float.h>
51 #include "../common.hpp"
52 
53 namespace cv { namespace cudev {
54 
55 //! @addtogroup cudev
56 //! @{
57 
58 template <class T> struct numeric_limits;
59 
60 template <> struct numeric_limits<bool>
61 {
mincv::cudev::numeric_limits62     __device__ __forceinline__ static bool min() { return false; }
maxcv::cudev::numeric_limits63     __device__ __forceinline__ static bool max() { return true;  }
64     static const bool is_signed = false;
65 };
66 
67 template <> struct numeric_limits<schar>
68 {
mincv::cudev::numeric_limits69     __device__ __forceinline__ static schar min() { return SCHAR_MIN; }
maxcv::cudev::numeric_limits70     __device__ __forceinline__ static schar max() { return SCHAR_MAX; }
71     static const bool is_signed = true;
72 };
73 
74 template <> struct numeric_limits<uchar>
75 {
mincv::cudev::numeric_limits76     __device__ __forceinline__ static uchar min() { return 0; }
maxcv::cudev::numeric_limits77     __device__ __forceinline__ static uchar max() { return UCHAR_MAX; }
78     static const bool is_signed = false;
79 };
80 
81 template <> struct numeric_limits<short>
82 {
mincv::cudev::numeric_limits83     __device__ __forceinline__ static short min() { return SHRT_MIN; }
maxcv::cudev::numeric_limits84     __device__ __forceinline__ static short max() { return SHRT_MAX; }
85     static const bool is_signed = true;
86 };
87 
88 template <> struct numeric_limits<ushort>
89 {
mincv::cudev::numeric_limits90     __device__ __forceinline__ static ushort min() { return 0; }
maxcv::cudev::numeric_limits91     __device__ __forceinline__ static ushort max() { return USHRT_MAX; }
92     static const bool is_signed = false;
93 };
94 
95 template <> struct numeric_limits<int>
96 {
mincv::cudev::numeric_limits97     __device__ __forceinline__ static int min() { return INT_MIN; }
maxcv::cudev::numeric_limits98     __device__ __forceinline__ static int max() { return INT_MAX; }
99     static const bool is_signed = true;
100 };
101 
102 template <> struct numeric_limits<uint>
103 {
mincv::cudev::numeric_limits104     __device__ __forceinline__ static uint min() { return 0; }
maxcv::cudev::numeric_limits105     __device__ __forceinline__ static uint max() { return UINT_MAX; }
106     static const bool is_signed = false;
107 };
108 
109 template <> struct numeric_limits<float>
110 {
mincv::cudev::numeric_limits111     __device__ __forceinline__ static float min() { return FLT_MIN; }
maxcv::cudev::numeric_limits112     __device__ __forceinline__ static float max() { return FLT_MAX; }
epsiloncv::cudev::numeric_limits113     __device__ __forceinline__ static float epsilon() { return FLT_EPSILON; }
114     static const bool is_signed = true;
115 };
116 
117 template <> struct numeric_limits<double>
118 {
mincv::cudev::numeric_limits119     __device__ __forceinline__ static double min() { return DBL_MIN; }
maxcv::cudev::numeric_limits120     __device__ __forceinline__ static double max() { return DBL_MAX; }
epsiloncv::cudev::numeric_limits121     __device__ __forceinline__ static double epsilon() { return DBL_EPSILON; }
122     static const bool is_signed = true;
123 };
124 
125 //! @}
126 
127 }}
128 
129 #endif
130