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#pragma once
#include <list>
#include <ostream>
#include <cstdint>
class number {
public:
number() = default;
number(const number &) = default;
number(number &&) = default;
number &operator=(const number &) = default;
number(std::uint32_t);
/**
* \brief Return a hexadecimal string representation of this number.
*/
std::string to_hex_string() const;
/**
* \brief Return a decimal string representation of this number.
*/
std::string to_dec_string() const;
/**
* \brief Return a 32-bits-wide integer that corresponds to this number.
*
* \throws std::out_of_range The number cannot be represented by a single
* 32-bits-wide integer.
*/
std::uint32_t to_uint32() const;
/**
* \brief Return the result of the addition of a number and this number.
*
* \param n The number to add to this number.
*/
number operator+(const number &n) const;
/**
* \brief Return the result of the multiplication of a number and this
* number.
*
* \param n The number to multiply with this number.
*/
number operator*(const number &) const;
/**
* \brief Return a number equals to this number where n bits have been
* shifted to the left.
*
* \param n Number of bits to shift.
*/
number operator<<(std::uint32_t n) const;
/**
* \brief Tells whether the number passed as parameter is strictly less
* than this number.
*
* \param n The number to compare with this number.
*/
bool operator<(const number &n) const;
/**
* \brief Tells whether the number passed as parameter is strictly greater
* than this number.
*
* \param n The number to compare with this number.
*/
bool operator>(const number &n) const;
/**
* \brief Tells whether the number passed as parameter is less than or
* equal to this number.
*
* \param n The number to compare with this number.
*/
bool operator<=(const number &n) const;
/**
* \brief Tells whether the number passed as parameter is greater than or
* equal to this number.
*
* \param n The number to compare with this number.
*/
bool operator>=(const number &n) const;
/**
* \brief Tells whether the number passed as parameter is equal to this
* number.
*
* \param n The number to compare with this number.
*/
bool operator==(const number &n) const;
/**
* \brief Tells whether the number passed as parameter is not equal to this
* number.
*
* \param n The number to compare with this number.
*/
bool operator!=(const number &n) const;
/**
* \brief Add a number to this number.
*
* \param n Number to add to this number.
*/
number &operator+=(const number &n);
/**
* \brief Shift the number n bits to the left.
*
* \param n Number of bits to shift.
*/
number &operator<<=(std::uint32_t);
/**
* \brief Increment this number.
*/
number &operator++();
private:
/* First item is the least significant. */
std::list<std::uint32_t> _operands;
};
std::ostream &operator<<(std::ostream &, const number &);
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