Unit Class Reference

A physical unit. More...

Public Member Functions
	Unit (int exp, int m, int kg, int s, int A, int K, int mol, int cd)
	Construct a physical unit. More...
	Unit (string prefix, string name)
	Construct a physical unit. More...
void	set (int exp, int m, int kg, int s, int A, int K, int mol, int cd)
	Set values. More...
void	set (int m, int kg, int s, int A, int K, int mol, int cd)
	Set values. More...
	Unit ()
	Simple constructor.
	Unit (const Unit &)
	Copy constructor.
string	getSymbol ()
	Get name. More...
string	getName ()
	Get long name. More...
void	setPrefix (int n)
	Set the prefix. More...

Detailed Description

A physical unit.

This is mainly a helper class for the class Physical. It describes physical units such as Volt or Meter.

Constructor & Destructor Documentation

Unit::Unit	(	int	exp,
		int	m,
		int	kg,
		int	s,
		int	A,
		int	K,
		int	mol,
		int	cd
	)

Construct a physical unit.

Parameters

exp	Prefix
m	Meters
kg	Kilograms
s	Seconds
A	Ampere
K	Kelvin
mol	Mole
cd	Candela Construct a unit. The prefix's exponent (like -3 for milli, 0 for nothing or 3 for kilo), and the exponents of the individual SI units have to be given. Example: if acceleration is given as -3 km/s^2, the constructor must be called as Unit(3, 1,0,-2,0,0,0).

Unit::Unit	(	string	prefix,
		string	name
	)

Construct a physical unit.

Unit u('m','V');

Member Function Documentation

string Unit::getName

(

)

Get long name.

This retrieves the complete name, like 'millivolt'. Note that the long name is not always existant. (A unit like s^4 will have no long name.)

string Unit::getSymbol

(

)

Get name.

This retrieves the name as symbol, f.e. 'mV'. Note that you have to set the description for yourself.

void Unit::set	(	int	exp,
		int	m,
		int	kg,
		int	s,
		int	A,
		int	K,
		int	mol,
		int	cd
	)

Set values.

Parameters

exp	Prefix
m	Meters
kg	Kilograms
s	Seconds
A	Ampere
K	Kelvin
mol	Mole
cd	Candela Construct a unit. The prefix's exponent (like -3 for milli, 0 for nothing or 3 for kilo), and the exponents of the individual SI units have to be given. Example: if acceleration is given as -3 km/s^2, the constructor must be called as Unit(3, 1,0,-2,0,0,0).

void Unit::set	(	int	m,
		int	kg,
		int	s,
		int	A,
		int	K,
		int	mol,
		int	cd
	)

Set values.

Parameters

m	Meters
kg	Kilograms
s	Seconds
A	Ampere
K	Kelvin
mol	Mole
cd	Candela Construct a unit. The prefix's exponent (like -3 for milli, 0 for nothing or 3 for kilo), and the exponents of the individual SI units have to be given. Example: if acceleration is given as -3 km/s^2, the constructor must be called as Unit(3, 1,0,-2,0,0,0).

void Unit::setPrefix

(

int

n

)

Set the prefix.

Set the prefix by giving an integer from -24 to 24. Should be a multiple of 3, exception: -2,-1,2,1.