cpp02/ex03/Fixed.cpp

#include "Fixed.hpp"
#include <bitset>
#include <sstream>

const int Fixed::fracbits(8);

Fixed::Fixed() { value = 0; }

Fixed::Fixed(const int val) { value = val << fracbits; }

Fixed::Fixed(const float val) {
  const static int factor = 1 << fracbits;
  float temp = (val * factor);
  if (temp >= 0)
    temp += 0.5f;
  else
    temp -= 0.5f;
  value = (int)(temp);
}

Fixed::Fixed(const Fixed &other) { this->value = other.value; }

Fixed &Fixed::operator=(const Fixed &other) {
  this->setRawBits(other.getRawBits());
  return *this;
}

Fixed::~Fixed() {}

int Fixed::getRawBits(void) const { return value; }

void Fixed::setRawBits(int const raw) { value = raw; }

float Fixed::toFloat(void) const {
  const static int factor = 1 << fracbits;
  float result = (float)value / factor;
  return (result);
}

int Fixed::toInt(void) const {
  int result = (value >> fracbits);
  return (result);
}

std::string Fixed::toBin(void) const {
  std::stringstream result;
  result << std::bitset<32 - fracbits>(value >> fracbits);
  result << ".";
  result << std::bitset<fracbits>(value & (1 << fracbits) - 1);
  return result.str();
}

bool Fixed::operator>(const Fixed &other) const {
  return this->value > other.value;
}
bool Fixed::operator<(const Fixed &other) const {
  return this->value < other.value;
}
bool Fixed::operator>=(const Fixed &other) const {
  return this->value >= other.value;
}
bool Fixed::operator<=(const Fixed &other) const {
  return this->value <= other.value;
}
bool Fixed::operator==(const Fixed &other) const {
  return this->value == other.value;
}
bool Fixed::operator!=(const Fixed &other) const {
  return this->value != other.value;
}

const Fixed Fixed::operator+(const Fixed &other) const {
  Fixed result = *this;
  result.value += other.value;
  return result;
}
const Fixed Fixed::operator-(const Fixed &other) const {
  Fixed result = *this;
  result.value -= other.value;
  return result;
}
const Fixed Fixed::operator*(const Fixed &other) const {
  Fixed result = *this;
  result.value *= other.value;
  result.value >>= fracbits;
  return result;
}
const Fixed Fixed::operator/(const Fixed &other) const {
  Fixed result = *this;
  result.value /= other.value;
  result.value <<= fracbits;
  return result;
}
Fixed Fixed::operator++() {
  this->value++;
  return *this;
}
Fixed Fixed::operator--() {
  this->value--;
  return *this;
}
Fixed Fixed::operator++(int) {
  Fixed result = *this;
  operator++();
  return result;
}
Fixed Fixed::operator--(int) {
  Fixed result = *this;
  operator--();
  return result;
}

Fixed &Fixed::min(Fixed &left, Fixed &right) {
  if (left < right)
    return left;
  return right;
}
const Fixed &Fixed::min(const Fixed &left, const Fixed &right) {
  if (left < right)
    return left;
  return right;
}
Fixed &Fixed::max(Fixed &left, Fixed &right) {
  if (left > right)
    return left;
  return right;
}
const Fixed &Fixed::max(const Fixed &left, const Fixed &right) {
  if (left > right)
    return left;
  return right;
}

Fixed Fixed::abs() const {
  Fixed result = *this;
  if (result < 0)
    return Fixed(0) - result;
  return result;
}

std::ostream &operator<<(std::ostream &stream, const Fixed &fixed) {
  stream << fixed.toFloat();
  return stream;
}