#include <CGAL/Gmpzf.h>

Definition

An object of the class Gmpzf is a multiple-precision floating-point number which can represent numbers of the form $m*2^e$ , where $m$ is an arbitrary precision integer based on the GMP library, and $e$ is of type long.

This type can be considered exact, even if the exponent is not a multiple-precision number. This number type offers functionality very similar to MP_Float but is generally faster.

Is model of: EuclideanRing
: RealEmbeddable

Implementation

The significand $m$ of a Gmpzf is a Gmpz and is reference counted. The exponent $e$ of a Gmpzf is a long.

Related Symbols
(Note that these are not member symbols.)
std::ostream &	operator<< (std::ostream &out, const Gmpzf &f)
	writes a double approximation of `f` to the ostream `out`.

std::ostream &	print (std::ostream &out, const Gmpzf &f)
	writes an exact representation of `f` to the ostream `out`.

std::istream &	operator>> (std::istream &in, Gmpzf &f)
	reads a `double` from `in`, then converts it to a `Gmpzf`.

Creation
	Gmpzf ()
	creates a `Gmpzf` initialized with `0`.

	Gmpzf (int i)
	creates a `Gmpzf` initialized with `i`.

	Gmpzf (long int l)
	creates a `Gmpzf` initialized with `l`.

	Gmpzf (const Gmpz &i)
	creates a `Gmpzf` initialized with `i`.

	Gmpzf (const Gmpfr &f)
	creates a `Gmpzf` initialized with `f`.

	Gmpzf (double d)
	creates a `Gmpzf` initialized with `d`.

Constructor & Destructor Documentation

◆ Gmpzf() [1/6]

CGAL::Gmpzf::Gmpzf ( )

creates a Gmpzf initialized with 0.

◆ Gmpzf() [2/6]

CGAL::Gmpzf::Gmpzf ( int i )

creates a Gmpzf initialized with i.

◆ Gmpzf() [3/6]

CGAL::Gmpzf::Gmpzf ( long int l )

creates a Gmpzf initialized with l.

◆ Gmpzf() [4/6]

CGAL::Gmpzf::Gmpzf ( const Gmpz & i )

creates a Gmpzf initialized with i.

◆ Gmpzf() [5/6]

CGAL::Gmpzf::Gmpzf ( const Gmpfr & f )

creates a Gmpzf initialized with f.

◆ Gmpzf() [6/6]

CGAL::Gmpzf::Gmpzf ( double d )

creates a Gmpzf initialized with d.

Friends And Related Symbol Documentation

◆ operator<<()

std::ostream & operator<<	(	std::ostream &	out,
		const Gmpzf &	f
	)

◆ operator>>()

std::istream & operator>>	(	std::istream &	in,
		Gmpzf &	f
	)

◆ print()

std::ostream & print	(	std::ostream &	out,
		const Gmpzf &	f
	)