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NumLimitsT.hh
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48 
53 //=============================================================================
54 //
55 // CLASS NumLimitsT
56 //
57 //=============================================================================
58 
59 #ifndef OPENMESH_UTILS_NUMLIMITS_HH
60 #define OPENMESH_UTILS_NUMLIMITS_HH
61 
62 
63 //== INCLUDES =================================================================
64 
65 #include "Config.hh"
66 #include <limits.h>
67 #include <float.h>
68 
69 
70 //== NAMESPEACES ==============================================================
71 
72 namespace OpenMesh { // BEGIN_NS_OPENMESH
73 namespace Utils { // BEGIN_NS_UTILS
74 
75 
76 //== CLASS DEFINITION =========================================================
77 
78 
95 template <typename Scalar>
96 class NumLimitsT
97 {
98 public:
100  static inline Scalar min() { return 0; }
102  static inline Scalar max() { return 0; }
103 
104  static inline bool is_float() { return false; }
105  static inline bool is_integer() { return !NumLimitsT<Scalar>::is_float(); }
106  static inline bool is_signed() { return true; }
107 };
108 
109  // is_float
110 
111 template<>
112 inline bool NumLimitsT<float>::is_float() { return true; }
113 
114 template<>
115 inline bool NumLimitsT<double>::is_float() { return true; }
116 
117 template<>
118 inline bool NumLimitsT<long double>::is_float() { return true; }
119 
120  // is_signed
121 
122 template<>
123 inline bool NumLimitsT<unsigned char>::is_signed() { return false; }
124 
125 template<>
126 inline bool NumLimitsT<unsigned short>::is_signed() { return false; }
127 
128 template<>
129 inline bool NumLimitsT<unsigned int>::is_signed() { return false; }
130 
131 template<>
132 inline bool NumLimitsT<unsigned long>::is_signed() { return false; }
133 
134 template<>
135 inline bool NumLimitsT<unsigned long long>::is_signed() { return false; }
136 
137  // min/max
138 template<> inline int NumLimitsT<int>::min() { return INT_MIN; }
139 template<> inline int NumLimitsT<int>::max() { return INT_MAX; }
140 
141 template<> inline float NumLimitsT<float>::min() { return FLT_MIN; }
142 template<> inline float NumLimitsT<float>::max() { return FLT_MAX; }
143 
144 template<> inline double NumLimitsT<double>::min() { return DBL_MIN; }
145 template<> inline double NumLimitsT<double>::max() { return DBL_MAX; }
146 
147 
148 //=============================================================================
149 } // END_NS_UTILS
150 } // END_NS_OPENMESH
151 //=============================================================================
152 #endif // OPENMESH_NUMLIMITS_HH defined
153 //=============================================================================
154 
OpenMesh::Utils::NumLimitsT::min
static Scalar min()
Return the smallest absolte value a scalar type can store.
Definition: NumLimitsT.hh:100
OpenMesh::Utils::NumLimitsT::max
static Scalar max()
Return the maximum absolte value a scalar type can store.
Definition: NumLimitsT.hh:102