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Teuchos_OrdinalTraits.hpp
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42 // Kris
43 // 07.08.03 -- Move into Teuchos package/namespace
44 
45 #ifndef _TEUCHOS_ORDINALTRAITS_HPP_
46 #define _TEUCHOS_ORDINALTRAITS_HPP_
47 
52 #include "Teuchos_ConfigDefs.hpp"
53 #include <limits>
54 
68 /* This is the default structure used by OrdinalTraits<T> to produce a compile time
69  error when the specialization does not exist for type <tt>T</tt>.
70 */
71 namespace Teuchos {
72 
73 template<class T>
74 struct UndefinedOrdinalTraits
75 {
77  static inline T notDefined() { return T::this_type_is_missing_a_specialization(); }
78 };
79 
80 template<class T>
81 struct OrdinalTraits {
82 
84  static const bool hasMachineParameters = false;
85 
87  static inline T zero() { return UndefinedOrdinalTraits<T>::notDefined(); }
88 
90  static inline T one() { return UndefinedOrdinalTraits<T>::notDefined(); }
91 
93 
96  static inline T max() { return UndefinedOrdinalTraits<T>::notDefined(); }
97 
99  static inline T invalid() { return UndefinedOrdinalTraits<T>::notDefined(); }
100 
102  static inline std::string name() { return UndefinedOrdinalTraits<T>::notDefined(); }
103 };
104 
105 #ifndef DOXYGEN_SHOULD_SKIP_THIS
106 
107 template<>
108 struct OrdinalTraits<char> {
109  static const bool hasMachineParameters = false;
110  static inline char zero() {return(0);}
111  static inline char one() {return(1);}
112  static inline char invalid() {return(std::numeric_limits<char>::max());}
113  static inline char max() {return(std::numeric_limits<char>::max()-one());}
114  static inline std::string name() {return("char");}
115 };
116 
117 template<>
118 struct OrdinalTraits<short int> {
119  static const bool hasMachineParameters = false;
120  static inline short int zero() {return(0);}
121  static inline short int one() {return(1);}
122  static inline short int invalid() {return(-1);}
123  static inline short int max() {return(std::numeric_limits<short int>::max());}
124  static inline std::string name() {return("short int");}
125 };
126 
127 template<>
128 struct OrdinalTraits<int> {
129  static const bool hasMachineParameters = false;
130  static inline int zero() {return(0);}
131  static inline int one() {return(1);}
132  static inline int invalid() {return(-1);}
133  static inline int max() {return(std::numeric_limits<int>::max());}
134  static inline std::string name() {return("int");}
135 };
136 
137 template<>
138 struct OrdinalTraits<unsigned int> {
139  static const bool hasMachineParameters = false;
140  static inline unsigned int zero() {return(0);}
141  static inline unsigned int one() {return(1);}
142  static inline unsigned int invalid() {return(std::numeric_limits<unsigned int>::max());}
143  static inline unsigned int max() {return(std::numeric_limits<unsigned int>::max()-1);}
144  static inline std::string name() {return("unsigned int");}
145 };
146 
147 template<>
148 struct OrdinalTraits<long int> {
149  static const bool hasMachineParameters = false;
150  static inline long int zero() {return(static_cast<long int>(0));}
151  static inline long int one() {return(static_cast<long int>(1));}
152  static inline long int invalid() {return(static_cast<long int>(-1));}
153  static inline long int max() {return(std::numeric_limits<long int>::max());}
154  static inline std::string name() {return("long int");}
155 };
156 
157 template<>
158 struct OrdinalTraits<long unsigned int> {
159  static const bool hasMachineParameters = false;
160  static inline long unsigned int zero() {return(static_cast<long unsigned int>(0));}
161  static inline long unsigned int one() {return(static_cast<long unsigned int>(1));}
162  static inline long unsigned int invalid() {return(std::numeric_limits<long unsigned int>::max());}
163  static inline long unsigned int max() {return(std::numeric_limits<long unsigned int>::max()-1);}
164  static inline std::string name() {return("long unsigned int");}
165 };
166 
167 template<>
168 struct OrdinalTraits<long long int> {
169  static const bool hasMachineParameters = false;
170  static inline long long int zero() {return(static_cast<long long int>(0));}
171  static inline long long int one() {return(static_cast<long long int>(1));}
172  static inline long long int invalid() {return(static_cast<long long int>(-1));}
173  static inline long long int max() {return(std::numeric_limits<long long int>::max());}
174  static inline std::string name() {return("long long int");}
175 };
176 
177 template<>
178 struct OrdinalTraits<unsigned long long int> {
179  static const bool hasMachineParameters = false;
180  static inline unsigned long long int zero() {return(static_cast<unsigned long long int>(0));}
181  static inline unsigned long long int one() {return(static_cast<unsigned long long int>(1));}
182  static inline unsigned long long int invalid() {return(std::numeric_limits<unsigned long long int>::max());}
183  static inline unsigned long long int max() {return(std::numeric_limits<unsigned long long int>::max()-1);}
184  static inline std::string name() {return("unsigned long long int");}
185 };
186 
187 #ifdef HAVE_TEUCHOS___INT64
188 
189 template<>
190 struct OrdinalTraits<__int64> {
191  static const bool hasMachineParameters = false;
192  static inline __int64 zero() {return(static_cast<__int64>(0));}
193  static inline __int64 one() {return(static_cast<__int64>(1));}
194  static inline __int64 invalid() {return(std::numeric_limits<__int64>::max());}
195  static inline __int64 max() {return(std::numeric_limits<__int64>::max()-1);}
196  static inline std::string name() {return("__int64");}
197 };
198 
199 template<>
200 struct OrdinalTraits<unsigned __int64> {
201  static const bool hasMachineParameters = false;
202  static inline unsigned __int64 zero() {return(static_cast<unsigned __int64>(0));}
203  static inline unsigned __int64 one() {return(static_cast<unsigned __int64>(1));}
204  static inline unsigned __int64 invalid() {return(std::numeric_limits<unsigned __int64>::max());}
205  static inline unsigned __int64 max() {return(std::numeric_limits<unsigned __int64>::max()-1);}
206  static inline std::string name() {return("unsigned __int64");}
207 };
208 
209 #endif // HAVE_TEUCHOS___INT64
210 
211 #endif // DOXYGEN_SHOULD_SKIP_THIS
212 
213 } // namespace Teuchos
214 
215 #endif // _TEUCHOS_ORDINALTRAITS_HPP_
Teuchos::OrdinalTraits::one
static T one()
Returns representation of one for this ordinal type.
Definition: Teuchos_OrdinalTraits.hpp:90
Teuchos::OrdinalTraits::zero
static T zero()
Returns representation of zero for this ordinal type.
Definition: Teuchos_OrdinalTraits.hpp:87
Teuchos::OrdinalTraits::invalid
static T invalid()
Returns a value designating an invalid number. For signed types, this is typically negative one; for ...
Definition: Teuchos_OrdinalTraits.hpp:99
Teuchos::OrdinalTraits::hasMachineParameters
static const bool hasMachineParameters
Allows testing to see if ordinal traits machine parameters are defined.
Definition: Teuchos_OrdinalTraits.hpp:84
Teuchos_ConfigDefs.hpp
Teuchos header file which uses auto-configuration information to include necessary C++ headers...
Teuchos::OrdinalTraits::max
static T max()
Returns a value designating the maximum value accessible by code using OrdinalTraits.
Definition: Teuchos_OrdinalTraits.hpp:96
Teuchos::OrdinalTraits
This structure defines some basic traits for the ordinal field type.
Definition: Teuchos_OrdinalTraits.hpp:81
Teuchos::OrdinalTraits::name
static std::string name()
Returns name of this ordinal type.
Definition: Teuchos_OrdinalTraits.hpp:102
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