num_traits.h

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#ifndef MATHTOOLS_NUM_TRAITS_H
#define MATHTOOLS_NUM_TRAITS_H

namespace math {

template<typename T>
struct BaseNumTraits
{
  typedef T Real;

  static Real precision() { return Real(0); }
};

template<typename T>
struct NumTraits : public BaseNumTraits<T>
{ };

template<> struct NumTraits<float> : public BaseNumTraits<float>
{
  static Real precision() { return 1e-5f; }
};

template<> struct NumTraits<double> : public BaseNumTraits<double>
{
  static Real precision() { return 1e-12; }
};

template<> struct NumTraits<long double> : public BaseNumTraits<long double>
{
  static Real precision() { return 1e-15l; }
};

} // namespace math

#endif // MATHTOOLS_NUM_TRAITS_H