bliss::BigNum Class Reference

A simple wrapper class for non-negative big integers (or approximation of them). More...

#include <bignum.hh>

Public Member Functions
	BigNum ()
	~BigNum ()
void	assign (unsigned int n)
void	multiply (unsigned int n)
size_t	print (FILE *const fp) const
const std::vector< unsigned int > &	get_factors () const
std::string	to_string () const

Detailed Description

A simple wrapper class for non-negative big integers (or approximation of them).

If the compile time flag BLISS_USE_GMP is set, then the GNU Multiple Precision Arithmetic library (GMP) is used to obtain arbitrary precision. Otherwise, if the compile time flag BLISS_BIGNUM_APPROX is set, a "long double" is used to approximate a big integer. Otherwise, by default, a big integer is represented by a product of integer-sized factors.

Constructor & Destructor Documentation

BigNum()

bliss::BigNum::BigNum ( )

inline

Create a new big number and set it to zero.

~BigNum()

bliss::BigNum::~BigNum ( )

inline

Destroy the number.

Member Function Documentation

assign()

void bliss::BigNum::assign ( unsigned int  n )

inline

Set the number to n.

get_factors()

const std::vector< unsigned int > & bliss::BigNum::get_factors ( ) const

inline

Get a reference to the factors vector.

multiply()

void bliss::BigNum::multiply ( unsigned int  n )

inline

Multiply the number with n.

print()

size_t bliss::BigNum::print ( FILE *const  fp ) const

inline

Print the number in the file stream fp. In the current version, the returned number of characters printed, is incorrect (either -1 or 0).

to_string()

std::string bliss::BigNum::to_string ( ) const

inline

Get the tring representation of the number. Unoptimized, uses an elementary school algorithm to multiply the factors.

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

• src/bignum.hh