SymEngine::Integer Class Reference

Integer Class. More...

#include <integer.h>

Inheritance diagram for SymEngine::Integer:

Collaboration diagram for SymEngine::Integer:

Public Member Functions
void	accept (Visitor &v) const override
void	accept (EvalRealDoubleVisitorFinal &v) const override
	Integer (const integer_class &_i)
	Constructor of Integer using integer_class
	Integer (integer_class &&_i)
hash_t	__hash__ () const override
bool	__eq__ (const Basic &o) const override
int	compare (const Basic &o) const override
signed long int	as_int () const
	Convert to int, raise an exception if it does not fit.
unsigned long int	as_uint () const
	Convert to uint, raise an exception if it does not fit.
const integer_class &	as_integer_class () const
	Convert to integer_class.
bool	is_zero () const override
bool	is_one () const override
bool	is_minus_one () const override
bool	is_positive () const override
bool	is_negative () const override
bool	is_complex () const override
RCP< const Integer >	addint (const Integer &other) const
	Fast Integer Addition.
RCP< const Integer >	subint (const Integer &other) const
	Fast Integer Subtraction.
RCP< const Integer >	mulint (const Integer &other) const
	Fast Integer Multiplication.
RCP< const Number >	divint (const Integer &other) const
	Integer Division.
RCP< const Number >	pow_negint (const Integer &other) const
	Fast Negative Power Evaluation.
RCP< const Number >	powint (const Integer &other) const
	Fast Power Evaluation.
RCP< const Integer >	neg () const
RCP< const Number >	add (const Number &other) const override
	Slower Addition.
RCP< const Number >	sub (const Number &other) const override
	Slower Subtraction.
RCP< const Number >	rsub (const Number &other) const override
RCP< const Number >	mul (const Number &other) const override
	Slower Multiplication.
RCP< const Number >	div (const Number &other) const override
	Slower Division.
RCP< const Number >	rdiv (const Number &other) const override
RCP< const Number >	pow (const Number &other) const override
	Slower power evaluation.
RCP< const Number >	rpow (const Number &other) const override
Public Member Functions inherited from SymEngine::Number
virtual RCP< const Basic >	conjugate () const
virtual bool	is_exact () const
	return true if the number is an exact representation
bool	is_exact_zero () const
virtual Evaluate &	get_eval () const
	Get Evaluate singleton to evaluate numerically.
vec_basic	get_args () const override
	Returns the list of arguments.
virtual bool	is_perfect_power (bool is_expected=false) const
virtual bool	nth_root (const Ptr< RCP< const Number >> &, unsigned long n) const
Public Member Functions inherited from SymEngine::Basic
TypeID	get_type_code () const
	Basic ()
	Constructor.
	Basic (const Basic &)=delete
	Delete the copy constructor and assignment.
Basic &	operator= (const Basic &)=delete
	Assignment operator in continuation with above.
	Basic (Basic &&)=delete
	Delete the move constructor and assignment.
Basic &	operator= (Basic &&)=delete
	Assignment operator in continuation with above.
hash_t	hash () const
bool	__neq__ (const Basic &o) const
	true if this is not equal to o. More...
int	__cmp__ (const Basic &o) const
	Comparison operator.
std::string	__str__ () const
std::string	dumps () const
	Returns a string of the instance serialized.
RCP< const Basic >	subs (const map_basic_basic &subs_dict) const
	Substitutes 'subs_dict' into 'self'.
RCP< const Basic >	xreplace (const map_basic_basic &subs_dict) const
virtual RCP< const Basic >	expand_as_exp () const
	expands the special function in terms of exp function
RCP< const Basic >	diff (const RCP< const Symbol > &x, bool cache=true) const
Public Member Functions inherited from SymEngine::EnableRCPFromThis< Basic >
RCP< Basic >	rcp_from_this ()
	Get RCP<T> pointer to self (it will cast the pointer to T)
RCP< const Basic >	rcp_from_this () const
	Get RCP<const T> pointer to self (it will cast the pointer to const T)
RCP< const T2 >	rcp_from_this_cast () const
	Get RCP<T2> pointer to self (it will cast the pointer to T2)
unsigned int	use_count () const

Static Public Attributes
static const TypeID	type_code_id = SYMENGINE_INTEGER

Private Attributes
integer_class	i
	i : object of integer_class

Additional Inherited Members
Static Public Member Functions inherited from SymEngine::Basic
static RCP< const Basic >	loads (const std::string &)
	Creates an instance of a serialized string.
Data Fields inherited from SymEngine::Basic
TypeID	type_code_

Detailed Description

Integer Class.

Definition at line 18 of file integer.h.

Member Function Documentation

__eq__()

bool SymEngine::Integer::__eq__ ( const Basic &  o ) const

overridevirtual

Equality comparator

Parameters

o	- Object to be compared with

Returns

whether the 2 objects are equal

Implements SymEngine::Basic.

Definition at line 16 of file integer.cpp.

{
    if (is_a<Integer>(o)) {
        const Integer &s = down_cast<const Integer &>(o);
        return this->i == s.i;
    }
    return false;
}

__hash__()

hash_t SymEngine::Integer::__hash__ ( ) const

overridevirtual

Returns

size of the hash

Implements SymEngine::Basic.

Definition at line 9 of file integer.cpp.

{
    // only the least significant bits that fit into "long long int" are
    // hashed:
    return ((hash_t)mp_get_ui(this->i)) * (hash_t)(mp_sign(this->i));
}

compare()

int SymEngine::Integer::compare ( const Basic &  o ) const

overridevirtual

Returns -1, 0, 1 for this < o, this == o, this > o. This method is used when you want to sort things like x+y+z into canonical order. This function assumes that o is the same type as this. Use __cmp__ if you want general comparison.

Implements SymEngine::Basic.

Definition at line 25 of file integer.cpp.

{
    SYMENGINE_ASSERT(is_a<Integer>(o))
    const Integer &s = down_cast<const Integer &>(o);
    if (i == s.i)
        return 0;
    return i < s.i ? -1 : 1;
}

is_complex()

bool SymEngine::Integer::is_complex ( ) const

inlineoverridevirtual

Returns

false

Implements SymEngine::Number.

Definition at line 76 of file integer.h.

    {
        return false;
    }

is_minus_one()

bool SymEngine::Integer::is_minus_one ( ) const

inlineoverridevirtual

Returns

true if -1

Implements SymEngine::Number.

Definition at line 60 of file integer.h.

    {
        return this->i == -1;
    }

is_negative()

bool SymEngine::Integer::is_negative ( ) const

inlineoverridevirtual

Returns

true if negative

Implements SymEngine::Number.

Definition at line 70 of file integer.h.

    {
        return this->i < 0u;
    }

is_one()

bool SymEngine::Integer::is_one ( ) const

inlineoverridevirtual

Returns

true if 1

Implements SymEngine::Number.

Definition at line 55 of file integer.h.

    {
        return this->i == 1u;
    }

is_positive()

bool SymEngine::Integer::is_positive ( ) const

inlineoverridevirtual

Returns

true if positive

Implements SymEngine::Number.

Definition at line 65 of file integer.h.

    {
        return this->i > 0u;
    }

is_zero()

bool SymEngine::Integer::is_zero ( ) const

inlineoverridevirtual

Returns

true if 0

Implements SymEngine::Number.

Definition at line 50 of file integer.h.

    {
        return this->i == 0u;
    }

neg()

RCP<const Integer> SymEngine::Integer::neg ( ) const

inline

Returns

negative of self.

Definition at line 116 of file integer.h.

    {
        return make_rcp<const Integer>(-i);
    }

Field Documentation

type_code_id

const TypeID SymEngine::Integer::type_code_id = SYMENGINE_INTEGER

static

Type_code_id shared by all instances

Definition at line 25 of file integer.h.

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

• /home/runner/work/symengine/symengine/symengine/integer.h
• /home/runner/work/symengine/symengine/symengine/integer.cpp