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math.hpp
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math.hpp
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#ifndef __math_hpp__
#define __math_hpp__
namespace math
{
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
static constexpr char symbol ()
{
return ' ';
}
} Input;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg + operator()(args ...);
}
static constexpr char symbol ()
{
return '+';
}
} Add_lambda;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg - operator()(args ...);
}
static constexpr char symbol ()
{
return '-';
}
} Sub_lambda;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg * operator()(args ...);
}
static constexpr char symbol ()
{
return '*';
}
} Mul_lambda;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg / operator()(args ...);
}
static constexpr char symbol ()
{
return '/';
}
} Div_lambda;
struct
{
template < typename type >
auto operator () (type args)
{
return args;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg == operator()(args ...);
}
} Eq_lambda;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
template < typename type, typename ... types >
auto operator () (type arg, types ... args)
{
return arg != operator()(args ...);
}
} NEq_lambda;
struct
{
template < typename type >
auto operator () (type args)
{
return args;
}
template < typename type, typename ... types >
auto operator () (type first, types ... args)
{
return first > operator()(args ...);
}
static constexpr char symbol ()
{
return '>';
}
} Greater_lambda;
struct
{
template < typename type >
auto operator () (type args)
{
return args;
}
template < typename type, typename ... types >
auto operator () (type first, types ... args)
{
return first < operator()(args ...);
}
static constexpr char symbol ()
{
return '<';
}
} Lower_lambda;
struct
{
template < typename type >
type operator () (type first)
{
return first;
}
} Get;
} // end namespace
#endif // __math_hpp__