Reference Manual: CGAL

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GNU Multiple Precision Integer (CGAL_Gmpz)

Definition

An object of the class CGAL_Gmpz is an arbitrary precision integer based on the GNU Multiple Precision Arithmetic Library.

#include <CGAL/Gmpz.h>

Creation

CGAL_Gmpz q;
creates an uninitialized multiple precision integer q.

CGAL_Gmpz q ( int i);
creates an multiple precision integer initialized with i.

CGAL_Gmpz q ( double d);
creates an multiple precision integer initialized with the integral part of d.

Operations

The arithmetic operations

+, -, *, /, +=, -=, *=, /=, -

(unary), the comparison operations

<, <=, >,  >=, ==, !=

and the stream operations are all available.

The following functions are added to fulfill the CGAL requirements on number types.

double CGAL_to_double ( g)
returns some double approximation to g.

bool CGAL_is_valid ( g)
returns true

bool CGAL_is_finite ( g)
returns true

CGAL_io_Operator CGAL_io_tag ( g)

Implementation

CGAL_Gmpzs are reference counted.

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The CGAL Project. 22 January 1999.

CGAL_Gmpz q;
	creates an uninitialized multiple precision integer q.
CGAL_Gmpz q ( int i);
	creates an multiple precision integer initialized with i.
CGAL_Gmpz q ( double d);
	creates an multiple precision integer initialized with the integral part of d.

double	CGAL_to_double ( g)
		returns some double approximation to g.
bool	CGAL_is_valid ( g)
		returns true
bool	CGAL_is_finite ( g)
		returns true
CGAL_io_Operator	CGAL_io_tag ( g)