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