Precision Utilities

Functions
template<typename T , typename U >
double	tts::absolute_check (T const &a, U const &b)
	Compute the absolute distance between two values.
template<typename T , typename U >
bool	tts::ieee_check (T const &a, U const &b)
	Compute if values are exactly equals or all NaNs/Invalids.
template<typename T , typename U >
double	tts::relative_check (T const &a, U const &b)
	Compute the relative distance between two values.
template<typename T , typename U >
double	tts::ulp_check (T const &a, U const &b)
	Compute the distance in ULP between two values.

Function Documentation

absolute_check()

template<typename T , typename U >

double tts::absolute_check ( T const &  a, U const &  b  )

inline

#include <tts/tools/precision.hpp>

Compute the absolute distance between two values.

Note

This functions is meant to help implementing TTS_ABSOLUTE_EQUAL support for custom types. For testing purposes, use TTS_ABSOLUTE_EQUAL directly. See Precision Measurement for more details.

Parameters

a	Value to compare
b	Value to compare

Returns

The distance between a and b

ieee_check()

template<typename T , typename U >

bool tts::ieee_check ( T const &  a, U const &  b  )

inline

#include <tts/tools/precision.hpp>

Compute if values are exactly equals or all NaNs/Invalids.

Note

This functions is meant to help implementing TTS_IEEE_EQUAL support for custom types. For testing purposes, use TTS_IEEE_EQUAL directly. See Precision Measurement for more details.

Parameters

a	Value to compare
b	Value to compare

Returns

Is a == b or _::is_nan(a) && _::is_nan(b)

relative_check()

template<typename T , typename U >

double tts::relative_check ( T const &  a, U const &  b  )

inline

#include <tts/tools/precision.hpp>

Compute the relative distance between two values.

Note

This functions is meant to help implementing TTS_RELATIVE_EQUAL support for custom types. For testing purposes, use TTS_RELATIVE_EQUAL directly. See Precision Measurement for more details.

Parameters

a	Value to compare
b	Value to compare

Returns

The relative distance between a and b

ulp_check()

template<typename T , typename U >

double tts::ulp_check ( T const &  a, U const &  b  )

inline

#include <tts/tools/precision.hpp>

Compute the distance in ULP between two values.

Note

This functions is meant to help implementing TTS_ULP_EQUAL support for custom types. For testing purposes, use TTS_ULP_EQUAL directly. See Precision Measurement for more details.

Parameters

a	Value to compare
b	Value to compare

Returns

The distance in ULP between a and b