NumLimitsT.hh

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//=============================================================================
//
//  CLASS NumLimitsT
//
//=============================================================================

#ifndef OPENMESH_UTILS_NUMLIMITS_HH
#define OPENMESH_UTILS_NUMLIMITS_HH


//== INCLUDES =================================================================

#include "Config.hh"
#include <limits.h>
#include <float.h>


//== NAMESPEACES ==============================================================

namespace OpenMesh { // BEGIN_NS_OPENMESH
namespace Utils { // BEGIN_NS_UTILS


//== CLASS DEFINITION =========================================================


template <typename Scalar>
class NumLimitsT
{
public:
  static inline Scalar min() { return 0; }
  static inline Scalar max() { return 0; }

  static inline bool   is_float()   { return false; }
  static inline bool   is_integer() { return !NumLimitsT<Scalar>::is_float(); }
  static inline bool   is_signed()  { return true; }
};

  // is_float

template<> 
inline bool NumLimitsT<float>::is_float() { return true; }

template<> 
inline bool NumLimitsT<double>::is_float() { return true; }

template<> 
inline bool NumLimitsT<long double>::is_float() { return true; }

  // is_signed

template<> 
inline bool NumLimitsT<unsigned char>::is_signed() { return false; }

template<> 
inline bool NumLimitsT<unsigned short>::is_signed() { return false; }

template<> 
inline bool NumLimitsT<unsigned int>::is_signed() { return false; }

template<> 
inline bool NumLimitsT<unsigned long>::is_signed() { return false; }

template<> 
inline bool NumLimitsT<unsigned long long>::is_signed() { return false; }

  // min/max
template<> inline int  NumLimitsT<int>::min() { return INT_MIN; }
template<> inline int  NumLimitsT<int>::max() { return INT_MAX; }

template<> inline float NumLimitsT<float>::min() { return FLT_MIN; }
template<> inline float NumLimitsT<float>::max() { return FLT_MAX; }

template<> inline double NumLimitsT<double>::min() { return DBL_MIN; }
template<> inline double NumLimitsT<double>::max() { return DBL_MAX; }


//=============================================================================
} // END_NS_UTILS
} // END_NS_OPENMESH
//=============================================================================
#endif // OPENMESH_NUMLIMITS_HH defined
//=============================================================================