number_rational Class Reference

#include <number_impl.hpp>

Inheritance diagram for number_rational:

Public Member Functions
	number_rational (rational< long long > value)
	number_rational (long long num)
	number_rational (long long num, long long den)
rational< long long >	value () const
virtual std::shared_ptr < number_impl >	promote_to_void ()
virtual std::shared_ptr < number_impl >	promote_to_double ()
Public Member Functions inherited from number_impl
virtual	~number_impl ()
void	print (std::ostream &stream) const
std::string	to_string () const
void	save (std::ostream &stream) const
bool	equals (number_impl const &rhs) const
bool	less (number_impl const &rhs) const
std::shared_ptr< number_impl >	add (number_impl const &rhs)
std::shared_ptr< number_impl >	subtract (number_impl const &rhs)
std::shared_ptr< number_impl >	multiply (number_impl const &rhs)
std::shared_ptr< number_impl >	divide (number_impl const &rhs)
void	add_ref ()
void	del_ref ()
std::shared_ptr< number_impl >	promote (number_impl &rhs) const
virtual std::shared_ptr < number_impl >	promote_to_long ()
virtual std::shared_ptr < number_impl >	promote_to_rational ()

Private Member Functions
virtual std::string	do_to_string () const
virtual void	do_save (std::ostream &stream) const
virtual bool	do_equals (number_impl const &rhs) const
virtual bool	do_less (number_impl const &rhs) const
virtual std::shared_ptr < number_impl >	do_add (number_impl const &rhs)
virtual std::shared_ptr < number_impl >	do_subtract (number_impl const &rhs)
virtual std::shared_ptr < number_impl >	do_multiply (number_impl const &rhs)
virtual std::shared_ptr < number_impl >	do_divide (number_impl const &rhs)
virtual std::shared_ptr < number_impl >	do_promote (number_impl &rhs) const

Private Attributes
rational< long long >	value_

Additional Inherited Members
Static Public Member Functions inherited from number_impl
static std::shared_ptr < number_impl >	read_library (std::istream &stream)
Protected Member Functions inherited from number_impl
	number_impl ()

Detailed Description

Represent a rational number. For the greatest range, always use long to represent the numerator and denominator.

Definition at line 122 of file number_impl.hpp.

Constructor & Destructor Documentation

number_rational::number_rational ( rational< long long >  value )

inline

Definition at line 124 of file number_impl.hpp.

: number_impl(), value_(value) {}

number_rational::number_rational ( long long  num )

inline

Definition at line 125 of file number_impl.hpp.

: number_impl(), value_(num) {}

number_rational::number_rational ( long long  num, long long  den  )

inline

Definition at line 126 of file number_impl.hpp.

: number_impl(), value_(num, den) {}

Member Function Documentation

std::shared_ptr< number_impl > number_rational::do_add ( number_impl const &  rhs )

privatevirtual

Implements number_impl.

Definition at line 271 of file number_impl.cpp.

References value(), and value_.

{
  rational<long long> result{ value_ + dynamic_cast<number_rational const&>(rhs).value() };
  if (result.denominator() == 1)
    return std::make_shared<number_long>(result.numerator());
  else
    return std::make_shared<number_rational>(result);
}

std::shared_ptr< number_impl > number_rational::do_divide ( number_impl const &  rhs )

privatevirtual

Implements number_impl.

Definition at line 298 of file number_impl.cpp.

References rational< T >::denominator(), rational< T >::numerator(), value(), and value_.

{
  rational<long long> right{ dynamic_cast<number_rational const&>(rhs).value() };
  if (right.numerator() == 0)
    throw calc_error{"division by zero"};
  rational<long long> result = value_ / right;
  if (result.denominator() == 1)
    return std::make_shared<number_long>(result.numerator());
  else
    return std::make_shared<number_rational>(result);
}

bool number_rational::do_equals ( number_impl const &  rhs ) const

privatevirtual

Implements number_impl.

Definition at line 259 of file number_impl.cpp.

References value().

{
  return value() == dynamic_cast<number_rational const&>(rhs).value();
}

bool number_rational::do_less ( number_impl const &  rhs ) const

privatevirtual

Implements number_impl.

Definition at line 265 of file number_impl.cpp.

References value().

{
  return value() < dynamic_cast<number_rational const&>(rhs).value();
}

std::shared_ptr< number_impl > number_rational::do_multiply ( number_impl const &  rhs )

privatevirtual

Implements number_impl.

Definition at line 289 of file number_impl.cpp.

References value(), and value_.

{
  rational<long long> result{ value_ * dynamic_cast<number_rational const&>(rhs).value() };
  if (result.denominator() == 1)
    return std::make_shared<number_long>(result.numerator());
  else
    return std::make_shared<number_rational>(result);
}

std::shared_ptr< number_impl > number_rational::do_promote ( number_impl &  rhs ) const

privatevirtual

Implements number_impl.

Definition at line 310 of file number_impl.cpp.

References number_impl::promote_to_rational().

{
  return rhs.promote_to_rational();
}

void number_rational::do_save ( std::ostream &  stream ) const

privatevirtual

Implements number_impl.

Definition at line 253 of file number_impl.cpp.

References value().

{
  stream << "rational " << value() << ' ';
}

std::shared_ptr< number_impl > number_rational::do_subtract ( number_impl const &  rhs )

privatevirtual

Implements number_impl.

Definition at line 280 of file number_impl.cpp.

References value(), and value_.

{
  rational<long long> result{ value_ - dynamic_cast<number_rational const&>(rhs).value() };
  if (result.denominator() == 1)
    return std::make_shared<number_long>(result.numerator());
  else
    return std::make_shared<number_rational>(result);
}

std::string number_rational::do_to_string ( ) const

privatevirtual

Implements number_impl.

Definition at line 245 of file number_impl.cpp.

References value().

{
  std::ostringstream stream{};
  stream << value();
  return stream.str();
}

std::shared_ptr< number_impl > number_rational::promote_to_double ( )

virtual

Reimplemented from number_impl.

Definition at line 321 of file number_impl.cpp.

References value().

{
  return std::make_shared<number_double>(static_cast<double>(value()));
}

std::shared_ptr< number_impl > number_rational::promote_to_void ( )

virtual

Reimplemented from number_impl.

Definition at line 316 of file number_impl.cpp.

{
  return std::make_shared<number_void>();
}

rational<long long> number_rational::value ( ) const

inline

Definition at line 127 of file number_impl.hpp.

References value_.

Referenced by do_add(), do_divide(), do_equals(), do_less(), do_multiply(), do_save(), do_subtract(), do_to_string(), and promote_to_double().

{ return value_; }

Member Data Documentation

rational<long long> number_rational::value_

private

Definition at line 141 of file number_impl.hpp.

Referenced by do_add(), do_divide(), do_multiply(), do_subtract(), and value().

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

• number_impl.hpp
• number_impl.cpp