infinity.h

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#ifndef SYMENGINE_INFINITY_H
#define SYMENGINE_INFINITY_H
 
#include <symengine/basic.h>
#include <symengine/number.h>
#include <symengine/integer.h>
#include <symengine/mul.h>
 
namespace SymEngine
{
 
class Infty : public Number
{
    RCP<const Number> _direction;
 
public:
    IMPLEMENT_TYPEID(SYMENGINE_INFTY)
    Infty(const RCP<const Number> &direction);
    Infty(const Infty &inf);
    static RCP<const Infty> from_direction(const RCP<const Number> &direction);
    static RCP<const Infty> from_int(const int val);
 
    bool is_canonical(const RCP<const Number> &num) const;
    hash_t __hash__() const override;
 
    // Implement these
    bool __eq__(const Basic &o) const override;
    int compare(const Basic &o) const override;
 
    vec_basic get_args() const override
    {
        return {_direction};
    }
 
    inline bool is_zero() const override
    {
        return false;
    }
    inline bool is_one() const override
    {
        return false;
    }
    inline bool is_minus_one() const override
    {
        return false;
    }
 
    inline bool is_exact() const override
    {
        return false;
    }
    // //! Get `Evaluate` singleton to evaluate numerically
    Evaluate &get_eval() const override;
 
    inline RCP<const Number> get_direction() const
    {
        return _direction;
    }
 
    bool is_unsigned_infinity() const;
    bool is_positive_infinity() const;
    bool is_negative_infinity() const;
 
    inline bool is_positive() const override
    {
        return is_positive_infinity();
    }
 
    inline bool is_negative() const override
    {
        return is_negative_infinity();
    }
 
    inline bool is_complex() const override
    {
        return is_unsigned_infinity();
    }
    RCP<const Basic> conjugate() const override;
 
    // Think about it again
    RCP<const Number> add(const Number &other) const override;
    RCP<const Number> mul(const Number &other) const override;
    RCP<const Number> div(const Number &other) const override;
    RCP<const Number> pow(const Number &other) const override;
    RCP<const Number> rpow(const Number &other) const override;
};
 
inline RCP<const Infty> infty(int n = 1)
{
    return make_rcp<Infty>(integer(n));
}
 
RCP<const Infty> infty(const RCP<const Number> &direction);
 
} // namespace SymEngine
#endif