Level 0 linear expression (ap_linexpr0_t wrapper). More...

#include <apxx_linexpr0.hh>

Classes
class	const_iterator
	Iterator to traverse a constant linexpr0. More...

class	iterator
	Iterator to traverse and mutate a linear expression. More...

Public Member Functions
Constructors
	linexpr0 (ap_linexpr_discr_t discr=AP_LINEXPR_SPARSE, size_t size=0)
	Creates a new expression.

	linexpr0 (const linexpr0 &x)
	Makes a (deep) copy.

	linexpr0 (const linexpr0 &x, const dimchange &d)
	Makes a (deep) copy, and adds some dimensions (shifting coefficients if needed).

	linexpr0 (const linexpr0 &x, const dimperm &d)
	Makes a (deep) copy, and applies a permutation on coefficients.

	linexpr0 (size_t size, const coeff coeffs[], const coeff &cst, ap_linexpr_discr_t discr=AP_LINEXPR_SPARSE)
	Makes a new linear expression with the given size and coefficients (copied).

	linexpr0 (const std::vector< coeff > &coeffs, const coeff &cst, ap_linexpr_discr_t discr=AP_LINEXPR_SPARSE)
	Makes a new linear expression with the given coefficients (copied).

	linexpr0 (size_t size, const coeff coeffs[], const ap_dim_t dims[], const coeff &cst)
	Makes a new linear expression with the given size and coefficients (copied).

Destructor
	~linexpr0 ()
	Frees all space for the expression and coefficients.

Assignment
linexpr0 &	operator= (const linexpr0 &x)
	Makes a (deep) copy.

Dimension operations
void	resize (size_t size)
	Changes the number of coefficients in the expression. (Useful only for dense expressions.)

void	add_dimensions (const dimchange &d)
	Adds some dimensions, shifting coefficients if needed.

void	permute_dimensions (const dimperm &d)
	Applies a permutation on coefficients.

Accesses, size
size_t	size () const
	Returns the number of coefficients in the expression.

ap_linexpr_discr_t	get_discr () const
	Returns the expression type.

coeff &	get_cst ()
	Returns a (modifiable) reference to the constant coefficient.

const coeff &	get_cst () const
	Returns a reference to the constant coefficient.

coeff &	operator[] (ap_dim_t dim)
	Returns a (modifiable) reference to the coefficient corresponding to the given dimension.

const coeff &	operator[] (ap_dim_t dim) const
	Returns a reference to the coefficient corresponding to the given dimension.

Iterator
iterator	begin ()
	Returns a new iterator to traverse and mutate the linear expression.

const_iterator	begin () const
	Returns a new constant iterator to traverse the linear expression.

Operators
void	minimize ()
	Minimizes all coefficients.

long	hash () const
	Returns a hash-code.

C API compatibility
const ap_linexpr0_t *	get_ap_linexpr0_t () const
	Returns a pointer to the internal APRON object stored in *this.

ap_linexpr0_t *	get_ap_linexpr0_t ()
	Returns a pointer to the internal APRON object stored in *this.

Public Member Functions inherited from apron::use_malloc
void *	operator new (size_t sz)

void *	operator new[] (size_t sz)

void	operator delete (void *p)

void	operator delete[] (void *p)

Protected Member Functions
	linexpr0 (ap_linexpr0_t *p)
	Internal use only. Shallow copy of structure followed by a free to take ownership of expression.

Protected Attributes
ap_linexpr0_t	l
	Structure managed by APRON.

Printing
void	print (char *name_of_dim=NULL, FILE stream=stdout) const
	Prints to a C stream.

Tests
bool	is_integer (size_t intdim) const
	Whether only dimensions greater than `intdim` have a non-zero coefficient.

bool	is_real (size_t intdim) const
	Whether only dimensions strictly smaller than `intdim` have a non-zero coefficient.

ap_linexpr_type_t	get_type () const
	Gets the type of the linear expression.

bool	is_linear () const
	Whether all coefficients are scalar.

bool	is_quasilinear () const
	Whether all coefficients are scalar, except maybe the constant one.

Detailed Description

Level 0 linear expression (ap_linexpr0_t wrapper).

A linexpr0 object represents a linear expression with scalar or interval coefficients (coeff). They have a constant coefficient, plus a coefficient for each represented dimension. An expression can be either sparse (AP_LINEXPR_SPARSE) or dense (AP_LINEXPR_DENSE). Dense expressions use an array of coefficients to represent dimensions from 0 up to the expression size. Sparse expressions can have 'holes' between coefficients and grow automatically when a coefficient for a non-existing dimension is accessed.

Constructor & Destructor Documentation

◆ linexpr0() [1/8]

linexpr0::linexpr0 ( ap_linexpr0_t * p )

inlineprotected

Internal use only. Shallow copy of structure followed by a free to take ownership of expression.

◆ linexpr0() [2/8]

linexpr0::linexpr0	(	ap_linexpr_discr_t	discr = AP_LINEXPR_SPARSE,
		size_t	size = 0 )

inline

Creates a new expression.

discr whether the expression is sparse (AP_LINEXPR_SPARSE) or dense (AP_LINEXPR_DENSE).
size is the initial number of dimensions.

◆ linexpr0() [3/8]

linexpr0::linexpr0 ( const linexpr0 & x )

inline

Makes a (deep) copy.

◆ linexpr0() [4/8]

linexpr0::linexpr0	(	const linexpr0 &	x,
		const dimchange &	d )

inline

Makes a (deep) copy, and adds some dimensions (shifting coefficients if needed).

◆ linexpr0() [5/8]

linexpr0::linexpr0	(	const linexpr0 &	x,
		const dimperm &	d )

inline

Makes a (deep) copy, and applies a permutation on coefficients.

◆ linexpr0() [6/8]

linexpr0::linexpr0	(	size_t	size,
		const coeff	coeffs[],
		const coeff &	cst,
		ap_linexpr_discr_t	discr = AP_LINEXPR_SPARSE )

inline

Makes a new linear expression with the given size and coefficients (copied).

discr whether the expression is sparse (AP_LINEXPR_SPARSE) or dense (AP_LINEXPR_DENSE).
coeffs has size size, coeffs[i] corresponds to the coefficient for dimension i.
cst corresponds to the constant coefficient.

◆ linexpr0() [7/8]

linexpr0::linexpr0	(	const std::vector< coeff > &	coeffs,
		const coeff &	cst,
		ap_linexpr_discr_t	discr = AP_LINEXPR_SPARSE )

inline

Makes a new linear expression with the given coefficients (copied).

discr whether the expression is sparse (AP_LINEXPR_SPARSE) or dense (AP_LINEXPR_DENSE).
coeffs vector of coefficients, coeffs[i] corresponds to the coefficient for dimension i.
cst corresponds to the constant coefficient.

◆ linexpr0() [8/8]

linexpr0::linexpr0	(	size_t	size,
		const coeff	coeffs[],
		const ap_dim_t	dims[],
		const coeff &	cst )

inline

Makes a new linear expression with the given size and coefficients (copied).

The expression is always sparse.

coeffs has size size, coeffs[i] corresponds to the coefficient for dimension dims[i];
dims is a list of size dimensions (sorted in increasing order)
cst corresponds to the constant coefficient.

◆ ~linexpr0()

linexpr0::~linexpr0 ( )

inline

Frees all space for the expression and coefficients.

Member Function Documentation

◆ add_dimensions()

void linexpr0::add_dimensions ( const dimchange & d )

inline

Adds some dimensions, shifting coefficients if needed.

◆ begin() [1/2]

linexpr0::iterator linexpr0::begin ( )

inline

Returns a new iterator to traverse and mutate the linear expression.

◆ begin() [2/2]

linexpr0::const_iterator linexpr0::begin ( ) const

inline

Returns a new constant iterator to traverse the linear expression.

◆ get_ap_linexpr0_t() [1/2]

ap_linexpr0_t * linexpr0::get_ap_linexpr0_t ( )

inline

Returns a pointer to the internal APRON object stored in *this.

◆ get_ap_linexpr0_t() [2/2]

const ap_linexpr0_t * linexpr0::get_ap_linexpr0_t ( ) const

inline

Returns a pointer to the internal APRON object stored in *this.

◆ get_cst() [1/2]

coeff & linexpr0::get_cst ( )

inline

Returns a (modifiable) reference to the constant coefficient.

◆ get_cst() [2/2]

const coeff & linexpr0::get_cst ( ) const

inline

Returns a reference to the constant coefficient.

◆ get_discr()

ap_linexpr_discr_t linexpr0::get_discr ( ) const

inline

Returns the expression type.

Returns: Either AP_LINEXPR_SPARSE or AP_LINEXPR_DENSE.

◆ get_type()

ap_linexpr_type_t linexpr0::get_type ( ) const

inline

Gets the type of the linear expression.

Returns: Either AP_LINEXPR_INTLINEAR (coefficients are interval), AP_LINEXPR_QUASILINEAR (coefficients are scalar except the constant one), or AP_LINEXPR_LINEAR (all coefficients are scalar).

◆ hash()

long linexpr0::hash ( ) const

inline

Returns a hash-code.

◆ is_integer()

bool linexpr0::is_integer ( size_t intdim ) const

inline

Whether only dimensions greater than intdim have a non-zero coefficient.

◆ is_linear()

bool linexpr0::is_linear ( ) const

inline

Whether all coefficients are scalar.

◆ is_quasilinear()

bool linexpr0::is_quasilinear ( ) const

inline

Whether all coefficients are scalar, except maybe the constant one.

◆ is_real()

bool linexpr0::is_real ( size_t intdim ) const

inline

Whether only dimensions strictly smaller than intdim have a non-zero coefficient.

◆ minimize()

void linexpr0::minimize ( )

inline

Minimizes all coefficients.

In sparse expressions, also remove zero and unused (hole) coefficients to save space.

◆ operator=()

linexpr0 & linexpr0::operator= ( const linexpr0 & x )

inline

Makes a (deep) copy.

◆ operator[]() [1/2]

coeff & linexpr0::operator[] ( ap_dim_t dim )

inline

Returns a (modifiable) reference to the coefficient corresponding to the given dimension.

Always succeeds if the expression is sparse: if the dimension has no coefficient yet, it is created and returned (linear time in the worst case).

Exceptions

std::out_of_range if the expression is dense and the dimension exceeds the size of the expression.

Warning: as a side-effect, the method renders previous references to coefficients within the same expression invalid. For instance,
l.get_coeff(0) = l.get_coeff(1) = 0;

apron::linexpr0::l
ap_linexpr0_t l
Structure managed by APRON.
Definition apxx_linexpr0.hh:48

is invalid.

◆ operator[]() [2/2]

const coeff & linexpr0::operator[] ( ap_dim_t dim ) const

inline

Returns a reference to the coefficient corresponding to the given dimension.

◆ permute_dimensions()

void linexpr0::permute_dimensions ( const dimperm & d )

inline

Applies a permutation on coefficients.

◆ print()

void linexpr0::print	(	char **	name_of_dim = NULL,
		FILE *	stream = stdout ) const

inline

Prints to a C stream.

◆ resize()

void linexpr0::resize ( size_t size )

inline

Changes the number of coefficients in the expression. (Useful only for dense expressions.)

◆ size()

size_t linexpr0::size ( ) const

inline

Returns the number of coefficients in the expression.

Member Data Documentation

◆ l

ap_linexpr0_t apron::linexpr0::l

protected

Structure managed by APRON.

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

/home/mine/apron/apronxx/apxx_linexpr0.hh
/home/mine/apron/apronxx/apxx_linexpr0_inline.hh

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Printing

Tests

Detailed Description

Constructor & Destructor Documentation

◆ linexpr0() [1/8]

◆ linexpr0() [2/8]

◆ linexpr0() [3/8]

◆ linexpr0() [4/8]

◆ linexpr0() [5/8]

◆ linexpr0() [6/8]

◆ linexpr0() [7/8]

◆ linexpr0() [8/8]

◆ ~linexpr0()

Member Function Documentation

◆ add_dimensions()

◆ begin() [1/2]

◆ begin() [2/2]

◆ get_ap_linexpr0_t() [1/2]

◆ get_ap_linexpr0_t() [2/2]

◆ get_cst() [1/2]

◆ get_cst() [2/2]

◆ get_discr()

◆ get_type()

◆ hash()

◆ is_integer()

◆ is_linear()

◆ is_quasilinear()

◆ is_real()

◆ minimize()

◆ operator=()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ permute_dimensions()

◆ print()

◆ resize()

◆ size()

Member Data Documentation

◆ l