OpenMesh
OpenMesh/Tools/Utils/NumLimitsT.hh
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00001 /*===========================================================================*\
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00033 \*===========================================================================*/ 
00034 
00035 /*===========================================================================*\
00036  *                                                                           *             
00037  *   $Revision: 362 $                                                         *
00038  *   $Date: 2011-01-26 10:21:12 +0100 (Mi, 26 Jan 2011) $                   *
00039  *                                                                           *
00040 \*===========================================================================*/
00041 
00046 //=============================================================================
00047 //
00048 //  CLASS NumLimitsT
00049 //
00050 //=============================================================================
00051 
00052 #ifndef OPENMESH_UTILS_NUMLIMITS_HH
00053 #define OPENMESH_UTILS_NUMLIMITS_HH
00054 
00055 
00056 //== INCLUDES =================================================================
00057 
00058 #include "Config.hh"
00059 #include <limits.h>
00060 #include <float.h>
00061 
00062 
00063 //== NAMESPEACES ==============================================================
00064 
00065 namespace OpenMesh { // BEGIN_NS_OPENMESH
00066 namespace Utils { // BEGIN_NS_UTILS
00067 
00068 
00069 //== CLASS DEFINITION =========================================================
00070 
00071 
00088 template <typename Scalar>
00089 class NumLimitsT
00090 {
00091 public:
00093   static inline Scalar min() { return 0; }
00095   static inline Scalar max() { return 0; }
00096 
00097   static inline bool   is_float()   { return false; }
00098   static inline bool   is_integer() { return !NumLimitsT<Scalar>::is_float(); }
00099   static inline bool   is_signed()  { return true; }
00100 };
00101 
00102   // is_float
00103 
00104 template<> 
00105 inline bool NumLimitsT<float>::is_float() { return true; }
00106 
00107 template<> 
00108 inline bool NumLimitsT<double>::is_float() { return true; }
00109 
00110 template<> 
00111 inline bool NumLimitsT<long double>::is_float() { return true; }
00112 
00113   // is_signed
00114 
00115 template<> 
00116 inline bool NumLimitsT<unsigned char>::is_signed() { return false; }
00117 
00118 template<> 
00119 inline bool NumLimitsT<unsigned short>::is_signed() { return false; }
00120 
00121 template<> 
00122 inline bool NumLimitsT<unsigned int>::is_signed() { return false; }
00123 
00124 template<> 
00125 inline bool NumLimitsT<unsigned long>::is_signed() { return false; }
00126 
00127 template<> 
00128 inline bool NumLimitsT<unsigned long long>::is_signed() { return false; }
00129 
00130   // min/max
00131 template<> inline int  NumLimitsT<int>::min() { return INT_MIN; }
00132 template<> inline int  NumLimitsT<int>::max() { return INT_MAX; }
00133 
00134 template<> inline float NumLimitsT<float>::min() { return FLT_MIN; }
00135 template<> inline float NumLimitsT<float>::max() { return FLT_MAX; }
00136 
00137 template<> inline double NumLimitsT<double>::min() { return DBL_MIN; }
00138 template<> inline double NumLimitsT<double>::max() { return DBL_MAX; }
00139 
00140 
00141 //=============================================================================
00142 } // END_NS_UTILS
00143 } // END_NS_OPENMESH
00144 //=============================================================================
00145 #endif // OPENMESH_NUMLIMITS_HH defined
00146 //=============================================================================
00147 
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