OSB_LIB::Fraction Class Reference

Collaboration diagram for OSB_LIB::Fraction:

[legend]List of all members.

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Detailed Description

Fractions without rounding error.

The class Fraction models a mathematical fraction.
The following invariants are always maintained:

• denominator_ is always > 0.
• nominator_ and denominator_ are reduced, i.e., there is no common divisor.

Definition at line 61 of file fraction.h.

Public Member Functions

• Fraction ()

  Default constructor: sets value to 0.
  

• Fraction (long nominator, long denominator=1)

  Constructor with nominator and optional denominator.
  

• long nominator () const

  Get the nominator.
  

• long denominator () const

  Get the denominator.
  

• double dbl () const

  Convert to double.
  

• std::string str () const

  Convert to string: n/d.
  

• Fraction & operator- ()

  Change the sign of the fraction.
  

• Fraction & operator+= (const Fraction &)

  Addition.
  

• Fraction & operator-= (const Fraction &)

  Substraction.
  

• Fraction & operator *= (const Fraction &)

  Multiplication.
  

• Fraction & operator/= (const Fraction &)

  Division.
  

Private Member Functions

• void reduce ()

  Reduce the fraction to its lowest term.
  

• void divide (long &higher, long &lower)

  Used by reduce(...).
  

Private Attributes

• long nominator_

  The nominator of the fraction.
  

• long denominator_

  The denominator of the fraction.
  

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Constructor & Destructor Documentation

OSB_LIB::Fraction::Fraction

(

)

[inline]

Default constructor: sets value to 0.

Definition at line 64 of file fraction.h.

OSB_LIB::Fraction::Fraction	(	long	nominator,
		long	denominator = 1
	)

Constructor with nominator and optional denominator.

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Member Function Documentation

double OSB_LIB::Fraction::dbl

(

)

const [inline]

Convert to double.

Definition at line 78 of file fraction.h.

References denominator_, and nominator_.

long OSB_LIB::Fraction::denominator

(

)

const [inline]

Get the denominator.

Definition at line 76 of file fraction.h.

References denominator_.

Referenced by OSB_LIB::operator==().

void OSB_LIB::Fraction::divide	(	long &	higher,
		long &	lower
	)			[private]

Used by reduce(...).

long OSB_LIB::Fraction::nominator

(

)

const [inline]

Get the nominator.

Definition at line 74 of file fraction.h.

References nominator_.

Referenced by OSB_LIB::operator==().

Fraction& OSB_LIB::Fraction::operator *=

(

const Fraction &

)

Multiplication.

Fraction& OSB_LIB::Fraction::operator+=

(

const Fraction &

)

Addition.

Fraction & OSB_LIB::Fraction::operator-

(

)

[inline]

Change the sign of the fraction.

Definition at line 136 of file fraction.h.

References nominator_.

Fraction& OSB_LIB::Fraction::operator-=

(

const Fraction &

)

Substraction.

Fraction& OSB_LIB::Fraction::operator/=

(

const Fraction &

)

Division.

void OSB_LIB::Fraction::reduce

(

)

[private]

Reduce the fraction to its lowest term.

std::string OSB_LIB::Fraction::str

(

)

const

Convert to string: n/d.

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Member Data Documentation

long OSB_LIB::Fraction::denominator_ [private]

The denominator of the fraction.

Definition at line 109 of file fraction.h.

Referenced by dbl(), and denominator().

long OSB_LIB::Fraction::nominator_ [private]

The nominator of the fraction.

Definition at line 107 of file fraction.h.

Referenced by dbl(), nominator(), and operator-().

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

• fraction.h

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