rationalNumber Class Reference
[Algebra objects, Field and Ring elements]

represents a rational number. Value range of the numerator and nominator is shrinked to a range of an 'int' More...

#include <rationalNumber.h>

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List of all members.

Public Member Functions
Constructors
	rationalNumber ()
	initialize rational number with zero
	rationalNumber (int value)
	initialize rational number with value
	rationalNumber (int _numerator, int _denominator)
	rationalNumber (std::stringstream &number)
Data Access
int	getNumerator () const
int	getDenominator () const
Properties
bool	isZero () const
bool	isNotZero () const
int	getSign () const
Operators
rationalNumber &	operator+= (const rationalNumber &r2)
std::ostream &	operator<< (std::ostream &os) const
bool	operator== (const rationalNumber &r2) const
bool	operator!= (const rationalNumber &r2) const
rationalNumber	operator- ()
Static Public Member Functions
static bool	memsetClearAllowed ()
Static Public Attributes
static const rationalNumber	Zero
static const rationalNumber	One
Protected Member Functions
int	extractSign (std::stringstream &number)
	liest auch +- als '-' Merkt aber nicht, dass '+-+' '-+-' o.Ä Unsinn ist.
Protected Attributes
Data
int	numerator
int	denominator
	denomitator; is always kept positive.

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Detailed Description

Todo:

replace internal int topy by int32 oder int64

Definition at line 22 of file rationalNumber.h.

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Constructor & Destructor Documentation

rationalNumber::rationalNumber

(

)

[inline]

Definition at line 97 of file rationalNumber.h.

References denominator, and numerator.

Referenced by operator-().

rationalNumber::rationalNumber

(

int

value

)

[inline]

Definition at line 104 of file rationalNumber.h.

References denominator, and numerator.

rationalNumber::rationalNumber	(	int	_numerator,
		int	_denominator
	)			[inline]

Definition at line 110 of file rationalNumber.h.

References denominator, and numerator.

rationalNumber::rationalNumber

(

std::stringstream &

ssNum

)

extract rational number from stream. Format: {+|-}sign[variable] | {+|-}[sign}(nominator){'/'{sign}denominator}}[variable]. Braces are not allowed.

Todo:

ueberlegen, wie verhindert werden soll, dass '-' als '-1' gelesen wird, wenn nicht '-x' oder ä. folgt.

Definition at line 15 of file rationalNumber.cc.

References denominator, extractChar(), extractSign(), getSign(), and numerator.

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Member Function Documentation

int rationalNumber::extractSign

(

std::stringstream &

number

)

[protected]

Definition at line 86 of file rationalNumber.cc.

Referenced by rationalNumber().

int rationalNumber::getDenominator

(

)

const [inline]

Definition at line 140 of file rationalNumber.h.

References denominator.

int rationalNumber::getNumerator

(

)

const [inline]

Definition at line 135 of file rationalNumber.h.

References numerator.

int rationalNumber::getSign

(

)

const [inline]

Definition at line 124 of file rationalNumber.h.

References denominator, and numerator.

Referenced by rationalNumber().

bool rationalNumber::isNotZero

(

)

const [inline]

Definition at line 150 of file rationalNumber.h.

References numerator.

bool rationalNumber::isZero

(

)

const [inline]

Definition at line 145 of file rationalNumber.h.

References numerator.

static bool rationalNumber::memsetClearAllowed

(

)

[inline, static]

Definition at line 39 of file rationalNumber.h.

bool rationalNumber::operator!=

(

const rationalNumber &

r2

)

const

Definition at line 138 of file rationalNumber.cc.

References denominator, and numerator.

rationalNumber & rationalNumber::operator+=

(

const rationalNumber &

r2

)

Definition at line 120 of file rationalNumber.cc.

References denominator, and numerator.

rationalNumber rationalNumber::operator-

(

)

[inline]

Definition at line 79 of file rationalNumber.h.

References denominator, numerator, and rationalNumber().

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std::ostream & rationalNumber::operator<<

(

std::ostream &

os

)

const

Definition at line 144 of file rationalNumber.cc.

References denominator, and numerator.

bool rationalNumber::operator==

(

const rationalNumber &

r2

)

const

Definition at line 133 of file rationalNumber.cc.

References denominator, and numerator.

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Member Data Documentation

int rationalNumber::denominator [protected]

Definition at line 30 of file rationalNumber.h.

Referenced by getDenominator(), getSign(), operator!=(), operator+=(), operator-(), operator<<(), operator==(), and rationalNumber().

int rationalNumber::numerator [protected]

Definition at line 29 of file rationalNumber.h.

Referenced by getNumerator(), getSign(), isNotZero(), isZero(), operator!=(), operator+=(), operator-(), operator<<(), operator==(), and rationalNumber().

const rationalNumber rationalNumber::One [static]

Definition at line 37 of file rationalNumber.h.

const rationalNumber rationalNumber::Zero [static]

Definition at line 36 of file rationalNumber.h.

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

• LinuxSrc/rationalNumber.h
• LinuxSrc/rationalNumber.cc