piranha::math::is_zero_impl< T, typename > Struct Template Reference

Default functor for the implementation of piranha::math::is_zero(). More...

#include <piranha/math.hpp>

Public Member Functions
template<typename U , enabler< U > = 0>
bool	operator() (const U &x) const
	Call operator. More...

Detailed Description

template<typename T, typename = void>
struct piranha::math::is_zero_impl< T, typename >

Default functor for the implementation of piranha::math::is_zero().

This functor should be specialised via the std::enable_if mechanism. The default implementation defines a call operator which is enabled only if the argument type is constructible from the C++ int type and T is equality comparable.

Definition at line 69 of file math.hpp.

Member Function Documentation

operator()()

template<typename T , typename = void>

template<typename U , enabler< U > = 0>

bool piranha::math::is_zero_impl< T, typename >::operator() ( const U &  x ) const

inline

Call operator.

Note

This operator is enabled only if U is constructible from int and equality-comparable.

The operator will compare x to an instance of U constructed from the literal 0.

Parameters

x	argument to be tested.

Returns

true if x is zero, false otherwise.

Exceptions

unspecified

any exception thrown by the construction or comparison of instances of type U, or by the conversion of the result of the comparison to bool.

Definition at line 94 of file math.hpp.

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

• math.hpp