number_double Class Reference

#include <number_impl.hpp>

Inheritance diagram for number_double:

List of all members.

Public Member Functions
	number_double (double value)
double	value () const
virtual number_impl *	promote_to_void ()
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 number_impl *	do_add (number_impl const &rhs)
virtual number_impl *	do_subtract (number_impl const &rhs)
virtual number_impl *	do_multiply (number_impl const &rhs)
virtual number_impl *	do_divide (number_impl const &rhs)
virtual number_impl *	do_promote (number_impl &rhs) const
Private Attributes
double	value_

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Detailed Description

Represent a floating-point value. Always use double to represent floating-point values.

Definition at line 144 of file number_impl.hpp.

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Constructor & Destructor Documentation

number_double::number_double

(

double

value

)

[inline]

Definition at line 146 of file number_impl.hpp.

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

: number_impl(), value_(value) {}

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Member Function Documentation

double number_double::value

(

)

const [inline]

Definition at line 147 of file number_impl.hpp.

References value_.

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

{ return value_; }

number_impl * number_double::promote_to_void

(

)

[virtual]

Reimplemented from number_impl.

Definition at line 403 of file number_impl.cpp.

{
  return new number_void();
}

std::string number_double::do_to_string

(

)

const [private, virtual]

Implements number_impl.

Definition at line 348 of file number_impl.cpp.

References value().

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

void number_double::do_save

(

std::ostream &

stream

)

const [private, virtual]

Implements number_impl.

Definition at line 356 of file number_impl.cpp.

References value().

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

bool number_double::do_equals

(

number_impl const &

rhs

)

const [private, virtual]

Implements number_impl.

Definition at line 362 of file number_impl.cpp.

References value().

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

bool number_double::do_less

(

number_impl const &

rhs

)

const [private, virtual]

Implements number_impl.

Definition at line 368 of file number_impl.cpp.

References value().

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

number_impl * number_double::do_add

(

number_impl const &

rhs

)

[private, virtual]

Implements number_impl.

Definition at line 374 of file number_impl.cpp.

References number_double(), value(), and value_.

{
  return new number_double(value_ + dynamic_cast<number_double const&>(rhs).value());
}

number_impl * number_double::do_subtract

(

number_impl const &

rhs

)

[private, virtual]

Implements number_impl.

Definition at line 379 of file number_impl.cpp.

References number_double(), value(), and value_.

{
  return new number_double(value_ - dynamic_cast<number_double const&>(rhs).value());
}

number_impl * number_double::do_multiply

(

number_impl const &

rhs

)

[private, virtual]

Implements number_impl.

Definition at line 384 of file number_impl.cpp.

References number_double(), value(), and value_.

{
  return new number_double(value_ * dynamic_cast<number_double const&>(rhs).value());
}

number_impl * number_double::do_divide

(

number_impl const &

rhs

)

[private, virtual]

Implements number_impl.

Definition at line 389 of file number_impl.cpp.

References number_double(), value(), and value_.

{
  double right = dynamic_cast<number_double const&>(rhs).value();
  if (right == 0.0)
    throw calc_error("division by zero");
  return new number_double(value_ / right);
}

number_impl * number_double::do_promote

(

number_impl &

rhs

)

const [private, virtual]

Implements number_impl.

Definition at line 397 of file number_impl.cpp.

References number_impl::promote_to_double().

{
  return rhs.promote_to_double();
}

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Member Data Documentation

double number_double::value_ [private]

Definition at line 160 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

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