utl::CloseTo Class Reference

Predicate for approximate equality (for floating point) More...

#include <Test.h>

Inheritance diagram for utl::CloseTo:

Public Member Functions
	CloseTo (const double eps=1e-6)
boost::format	Name () const
template<typename T >
bool	operator() (const T &lhs, const T &rhs) const

Protected Member Functions
template<typename T >
bool	IsCloseAbs (const T &lhs, const T &rhs) const
bool	IsCloseAbs (const utl::Triple &lhs, const utl::Triple &rhs) const
template<typename T >
bool	IsCloseRel (const T &lhs, const T &rhs) const
else return	IsCloseRel (lhs, rhs)

Static Protected Member Functions
template<typename Head , typename Tail >
static double	TupleDist2 (const boost::tuples::cons< Head, Tail > &lhs, const boost::tuples::cons< Head, Tail > &rhs)
static double	TupleDist2 (const boost::tuples::null_type &, const boost::tuples::null_type &)

Protected Attributes
bool	const
double	fEpsilon

Detailed Description

Predicate for approximate equality (for floating point)

The default precision is 1e-6, but it can be changed at construction time.

Definition at line 91 of file Test.h.

Constructor & Destructor Documentation

utl::CloseTo::CloseTo ( const double  eps = 1e-6 )

inline

Definition at line 93 of file Test.h.

Member Function Documentation

template<typename T >

bool utl::CloseTo::IsCloseAbs ( const T &  lhs, const T &  rhs  ) const

inlineprotected

Definition at line 104 of file Test.h.

References utl::abs(), and fEpsilon.

Referenced by utl::CloseAbs::operator()().

bool utl::CloseTo::IsCloseAbs ( const utl::Triple &  lhs, const utl::Triple &  rhs  ) const

inlineprotected

Definition at line 107 of file Test.h.

References fEpsilon, sqrt(), and TupleDist2().

template<typename T >

bool utl::CloseTo::IsCloseRel ( const T &  lhs, const T &  rhs  ) const

inlineprotected

Definition at line 111 of file Test.h.

References utl::abs(), and fEpsilon.

Referenced by utl::CloseRel::operator()().

else return utl::CloseTo::IsCloseRel ( lhs  , rhs    )

protected

boost::format utl::CloseTo::Name ( ) const

inline

Definition at line 99 of file Test.h.

References fEpsilon.

Referenced by tst::Verify().

template<typename T >

bool utl::CloseTo::operator() ( const T &  lhs, const T &  rhs  ) const

inline

Definition at line 96 of file Test.h.

template<typename Head , typename Tail >

static double utl::CloseTo::TupleDist2 ( const boost::tuples::cons< Head, Tail > &  lhs, const boost::tuples::cons< Head, Tail > &  rhs  )

inlinestaticprotected

Definition at line 138 of file Test.h.

Referenced by IsCloseAbs().

static double utl::CloseTo::TupleDist2 ( const boost::tuples::null_type &  , const boost::tuples::null_type &    )

inlinestaticprotected

Definition at line 145 of file Test.h.

Member Data Documentation

bool utl::CloseTo::const

protected

Initial value:

{
      return (2*sqrt(TupleDist2(lhs, rhs)) /
        (sqrt(TupleDist2(lhs, utl::Triple(0,0,0))) +
         sqrt(TupleDist2(rhs, utl::Triple(0,0,0))))) < fEpsilon

Definition at line 117 of file Test.h.

double utl::CloseTo::fEpsilon

protected

Definition at line 149 of file Test.h.

Referenced by IsCloseAbs(), IsCloseRel(), Name(), utl::CloseAbs::Name(), and utl::CloseRel::Name().

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The documentation for this class was generated from the following file:

• Test.h