Class for representation SI units of Fields. More...

#include <unit_si.hh>

Collaboration diagram for UnitSI:

Classes
struct	OutputFormat
	Variable parts of output format. Used in the `format` method. More...

Public Member Functions
	UnitSI ()
	Constructor. More...

UnitSI &	m (int exp=1)
	Methods set values of exponents for SI units with similar name. More...

UnitSI &	kg (int exp=1)

UnitSI &	s (int exp=1)

UnitSI &	A (int exp=1)

UnitSI &	K (int exp=1)

UnitSI &	mol (int exp=1)

UnitSI &	cd (int exp=1)

UnitSI &	md (int exp=-1)
	The dimension dependent meter: md^y = m^(yd), where 'd' is dimension. More...

std::string	format_latex () const

std::string	format_text () const

std::string	json () const

void	undef (bool val=true)

bool	is_def () const
	Return true if the unit is defined. More...

void	multiply (const UnitSI &other, int exp=1)
	Multiply with power of given unit. More...

void	reset ()
	Reset UnitSI object (set vector of exponents to zeros and set undef flag) More...

double	convert_unit_from (std::string actual_unit) const
	Convert and check user-defined unit. More...

bool	operator== (const UnitSI &other) const
	Comparison operator. More...

Static Public Member Functions
static UnitSI &	N ()

static UnitSI &	J ()
	Returns Joule. More...

static UnitSI &	W ()
	Returns Watt. More...

static UnitSI &	Pa ()
	Returns Pascal. More...

static UnitSI &	dimensionless ()
	Returns dimensionless unit. More...

static UnitSI &	one ()
	Returns dimensionless unit. More...

Private Types
enum	UnitOrder { order_m =0, order_md =1, order_kg =2, order_s =3, order_A =4, order_K =5, order_mol =6, order_cd =7, n_base_units =8 }
	Values determine positions of exponents in exponents_ vector. More...

Private Member Functions
std::string	format (OutputFormat form) const
	Generic output formating method. More...

Static Private Member Functions
static const std::string &	unit_symbol (unsigned int idx)

Private Attributes
std::vector< int >	exponents_

bool	undef_

Friends
UnitSI	operator* (const UnitSI &a, const UnitSI &b)
	Product of two units. More...

UnitSI	operator/ (const UnitSI &a, const UnitSI &b)
	Proportion of two units. More...

Detailed Description

Class for representation SI units of Fields.

Units are set through exponents of basic SI units. These exponents are set in methods with same name as unit symbols (e.g. kg(), K() etc).

Class contains method that provides formated string representing full unit symbol (usable in LaTeX output).

UnitSI object contains flag that says if it is defined

undefined object can't be formated
if any exponent is set, flag is set to defined

Class contains static methods that return frequently used derived units (Watt, Pascal etc).

Definition at line 40 of file unit_si.hh.

Member Enumeration Documentation

◆ UnitOrder

enum UnitSI::UnitOrder

private

Values determine positions of exponents in exponents_ vector.

Enumerator
order_m
order_md
order_kg
order_s
order_A
order_K
order_mol
order_cd
n_base_units

Definition at line 117 of file unit_si.hh.

Constructor & Destructor Documentation

◆ UnitSI()

UnitSI::UnitSI ( )

Constructor.

Definition at line 28 of file unit_si.cc.

Member Function Documentation

◆ A()

UnitSI & UnitSI::A ( int exp = 1 )

Definition at line 82 of file unit_si.cc.

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◆ cd()

UnitSI & UnitSI::cd ( int exp = 1 )

Definition at line 100 of file unit_si.cc.

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◆ convert_unit_from()

double UnitSI::convert_unit_from ( std::string actual_unit ) const

Convert and check user-defined unit.

converts unit SI define by user as string
checks if converted unit is equal with self
return multiplicated coeficient

Definition at line 217 of file unit_si.cc.

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◆ dimensionless()

UnitSI & UnitSI::dimensionless ( )

static

Returns dimensionless unit.

Definition at line 55 of file unit_si.cc.

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◆ format()

std::string UnitSI::format ( OutputFormat form ) const

private

Generic output formating method.

Definition at line 144 of file unit_si.cc.

◆ format_latex()

std::string UnitSI::format_latex ( ) const

Makes unit description string in Latex format, e.g. "$[m.kg^{2}.s^{-2}]$"

Have assert for undefined units.

Definition at line 117 of file unit_si.cc.

◆ format_text()

std::string UnitSI::format_text ( ) const

Definition at line 127 of file unit_si.cc.

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◆ is_def()

bool UnitSI::is_def ( ) const

Return true if the unit is defined.

Definition at line 201 of file unit_si.cc.

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◆ J()

UnitSI & UnitSI::J ( )

static

Returns Joule.

Definition at line 40 of file unit_si.cc.

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◆ json()

std::string UnitSI::json ( ) const

Machine readable JSON format. Units are stored as a record with keys given by SI units strings (corresponding to setters). Values of the keys are integer.

Definition at line 183 of file unit_si.cc.

◆ K()

UnitSI & UnitSI::K ( int exp = 1 )

Definition at line 88 of file unit_si.cc.

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◆ kg()

UnitSI & UnitSI::kg ( int exp = 1 )

Definition at line 70 of file unit_si.cc.

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◆ m()

UnitSI & UnitSI::m ( int exp = 1 )

Methods set values of exponents for SI units with similar name.

Definition at line 64 of file unit_si.cc.

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◆ md()

UnitSI & UnitSI::md ( int exp = -1 )

The dimension dependent meter: md^y = m^(yd), where 'd' is dimension.

Definition at line 106 of file unit_si.cc.

◆ mol()

UnitSI & UnitSI::mol ( int exp = 1 )

Definition at line 94 of file unit_si.cc.

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◆ multiply()

void UnitSI::multiply	(	const UnitSI &	other,
		int	exp = `1`
	)

Multiply with power of given unit.

Definition at line 205 of file unit_si.cc.

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◆ N()

UnitSI & UnitSI::N ( )

static

Methods return frequently used derived units Returns Newton

Definition at line 35 of file unit_si.cc.

◆ one()

UnitSI & UnitSI::one ( )

static

Returns dimensionless unit.

Definition at line 60 of file unit_si.cc.

◆ operator==()

bool UnitSI::operator== ( const UnitSI & other ) const

Comparison operator.

Definition at line 230 of file unit_si.cc.

◆ Pa()

UnitSI & UnitSI::Pa ( )

static

Returns Pascal.

Definition at line 50 of file unit_si.cc.

◆ reset()

void UnitSI::reset ( )

Reset UnitSI object (set vector of exponents to zeros and set undef flag)

Definition at line 212 of file unit_si.cc.

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◆ s()

UnitSI & UnitSI::s ( int exp = 1 )

Definition at line 76 of file unit_si.cc.

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◆ undef()

void UnitSI::undef ( bool val = true )

Set flag that unit is undefined.

Default value is true (set in constructor). If any exponent is set, undef_ flag is unset. In all fields unit must be defined by user.

Definition at line 197 of file unit_si.cc.

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◆ unit_symbol()

const std::string & UnitSI::unit_symbol ( unsigned int idx )

staticprivate

Symbols for individual units. Can not use static variable due to usage in static initialization.

Definition at line 137 of file unit_si.cc.

◆ W()

UnitSI & UnitSI::W ( )

static

Returns Watt.

Definition at line 45 of file unit_si.cc.

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Friends And Related Function Documentation

◆ operator*

UnitSI operator*	(	const UnitSI &	a,
		const UnitSI &	b
	)

friend

Product of two units.

Definition at line 235 of file unit_si.cc.

◆ operator/

UnitSI operator/	(	const UnitSI &	a,
		const UnitSI &	b
	)

friend

Proportion of two units.

Definition at line 248 of file unit_si.cc.

Member Data Documentation

◆ exponents_

std::vector<int> UnitSI::exponents_

private

Stores exponents of base SI units in the order given by the UnitOrder enum

where md represents value of exponent depended on dimension (m^{-d})

Definition at line 149 of file unit_si.hh.

◆ undef_

bool UnitSI::undef_

private

Flag if object is undefined.

Value is set on true in constructor, when any exponent is changed, false value is set.

Definition at line 157 of file unit_si.hh.

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

/opt/flow123d/flow123d/src/tools/unit_si.hh
/opt/flow123d/flow123d/src/tools/unit_si.cc

Classes

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Member Enumeration Documentation

◆ UnitOrder

Constructor & Destructor Documentation

◆ UnitSI()

Member Function Documentation

◆ A()

◆ cd()

◆ convert_unit_from()

◆ dimensionless()

◆ format()

◆ format_latex()

◆ format_text()

◆ is_def()

◆ J()

◆ json()

◆ K()

◆ kg()

◆ m()

◆ md()

◆ mol()

◆ multiply()

◆ N()

◆ one()

◆ operator==()

◆ Pa()

◆ reset()

◆ s()

◆ undef()

◆ unit_symbol()

◆ W()

Friends And Related Function Documentation

◆ operator*

◆ operator/

Member Data Documentation

◆ exponents_

◆ undef_