\begin{ccRefFunctionObjectConcept}{CircularKernel::Equal_2}

\ccDefinition

Testing equality between objects.

\ccRefines

\ccc{Kernel::Equal_2}

\ccCreationVariable{fo}

An object \ccVar\ of this type must provide in addition:

\ccMemberFunction{bool operator()
	(const CircularKernel::Circular_arc_point_2 &p0,
         const CircularKernel::Circular_arc_point_2 &p1);}
{For two points.}

\ccMemberFunction{bool operator()
	(const CircularKernel::Circular_arc_2 &a0,
         const CircularKernel::Circular_arc_2 &a1);}
{For two arcs.}

\ccMemberFunction{bool operator()
	(const CircularKernel::Line_arc_2 &a0,
         const CircularKernel::Line_arc_2 &a1);}
{For two segments.}

For the sake of completeness, the 
\ccc{operator()} must also be defined for a \ccc{Line_arc_2} and a
\ccc{Circular_arc_2} as arguments (in any order), and it always 
returns \ccc{false}.

\ccSeeAlso

\ccRefIdfierPage{CircularKernel::CompareX_2}\\
\ccRefIdfierPage{CircularKernel::CompareY_2}\\
\ccRefIdfierPage{CircularKernel::CompareXY_2}

\end{ccRefFunctionObjectConcept}