numeric.hpp File Reference

Numeric utility functions. More...

#include <cmath>
#include <limits>
#include <type_traits>

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Functions
template<typename T = double>
T	vmcmc::numeric::NaN ()
template<typename T = double>
T	vmcmc::numeric::inf ()
template<typename T , class = typename std::enable_if<std::is_integral<T>::value>::type>
int	vmcmc::numeric::numberOfDigits (T number)
template<typename T >
bool	vmcmc::numeric::approxEqual (T a, T b, T epsilon)
	Check whether two float values differ by a given epsilon. More...
template<typename T >
bool	vmcmc::numeric::approxLessOrEqual (T a, T b, T epsilon)
template<typename T >
bool	vmcmc::numeric::approxGreaterOrEqual (T a, T b, T epsilon)
template<typename T >
bool	vmcmc::numeric::essentEqual (T a, T b, T epsilon)
	Check whether two float values differ by a given epsilon. More...
template<typename T >
bool	vmcmc::numeric::essentLessOrEqual (T a, T b, T epsilon)
template<typename T >
bool	vmcmc::numeric::essentGreaterOrEqual (T a, T b, T epsilon)

Detailed Description

Numeric utility functions.

Copyright

Copyright 2016 Marco Kleesiek. Released under the GNU Lesser General Public License v3.

Date

27.07.2016

Author

marco.nosp@m.@kle.nosp@m.esiek.nosp@m..com

Function Documentation

template<typename T >

bool vmcmc::numeric::approxEqual ( T  a, T  b, T  epsilon  )

inline

Check whether two float values differ by a given epsilon.

Parameters

a
b
epsilon

Returns

return fabs(a - b) <= ( (fabs(a) < fabs(b) ? fabs(b) : fabs(a)) * epsilon);

template<typename T >

bool vmcmc::numeric::essentEqual ( T  a, T  b, T  epsilon  )

inline

Check whether two float values differ by a given epsilon.

Parameters

a
b
epsilon

Returns

return fabs(a - b) <= ( (fabs(a) > fabs(b) ? fabs(b) : fabs(a)) * epsilon);