decimal.hpp

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#pragma once
 
#include <ostream>
#include <stdint.h>
#include <string>
#include <utility>
 
typedef struct lb_decimal_t lb_decimal_t;
 
namespace longport {
 
class Decimal
{
private:
  lb_decimal_t* value_;
 
public:
  Decimal(const lb_decimal_t* other);
  Decimal(const Decimal& other);
  Decimal(const char* str);
  Decimal(const std::string& str);
  Decimal(double other);
  Decimal(double other, uint32_t dp);
  ~Decimal();
 
  operator const lb_decimal_t*() const;
  operator lb_decimal_t*();
  operator double() const;
 
  Decimal operator+(const Decimal& other) const;
  Decimal& operator+=(const Decimal& other);
  Decimal operator-(const Decimal& other) const;
  Decimal& operator-=(const Decimal& other);
  Decimal operator*(const Decimal& other) const;
  Decimal& operator*=(const Decimal& other);
  Decimal operator/(const Decimal& other) const;
  Decimal& operator/=(const Decimal& other);
  Decimal operator%(const Decimal& other) const;
  Decimal& operator%=(const Decimal& other);
  Decimal operator-() const;
  bool operator>(const Decimal& other) const;
  bool operator>=(const Decimal& other) const;
  bool operator==(const Decimal& other) const;
  bool operator<(const Decimal& other) const;
  bool operator<=(const Decimal& other) const;
  double to_double() const;
 
  void abs();
 
  void ceil();
 
  void floor();
 
  void fract();
 
  bool is_negative() const;
 
  bool is_positive() const;
 
  bool is_zero() const;
 
  Decimal max(const Decimal& other) const;
 
  Decimal min(const Decimal& other) const;
 
  void normalize();
 
  void round();
 
  void round(uint32_t dp);
 
  void trunc();
 
  void sin();
 
  void cos();
 
  void tan();
 
  void sqrt();
 
  void pow(const Decimal& exp);
 
  void ln();
 
  void log10();
 
  void exp();
 
  void exp_with_tolerance(const Decimal& tolerance);
 
  void erf();
 
  void norm_pdf();
 
  std::string to_string() const;
};
 
std::ostream&
operator<<(std::ostream& stream, const Decimal& value);
 
} // namespace longport