110 lines
2.4 KiB
C++
110 lines
2.4 KiB
C++
#include "exact_number.h"
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using namespace std;
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ExactNumber::ExactNumber(){
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numer = 0;
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denom = 1;
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}
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ExactNumber::ExactNumber(int n, int d){
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numer = n;
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denom = d;
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simplify();
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}
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ExactNumber::ExactNumber(const ExactNumber& n) {
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numer = n.numer;
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denom = n.denom;
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}
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ExactNumber::~ExactNumber() {
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}
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ExactNumber& ExactNumber::operator=(const ExactNumber& rhs) {
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numer = rhs.numer;
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denom = rhs.denom;
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return *this;
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}
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ExactNumber& ExactNumber::operator+=(const ExactNumber& rhs) {
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numer = numer * rhs.denom + denom * rhs.numer;
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denom *= rhs.denom;
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simplify();
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return *this;
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}
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ExactNumber& ExactNumber::operator-=(const ExactNumber& rhs) {
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numer = numer * rhs.denom - denom * rhs.numer;
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denom *= rhs.denom;
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simplify();
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return *this;
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}
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ExactNumber& ExactNumber::operator*=(const ExactNumber& rhs) {
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numer *= rhs.numer;
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denom *= rhs.denom;
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simplify();
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return *this;
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}
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ExactNumber& ExactNumber::operator/=(const ExactNumber& rhs) {
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numer *= rhs.denom;
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denom *= rhs.numer;
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simplify();
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return *this;
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}
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ExactNumber operator+(const ExactNumber& lhs, const ExactNumber& rhs) {
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ExactNumber result(lhs);
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result += rhs;
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return result;
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}
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ExactNumber operator-(const ExactNumber& lhs, const ExactNumber& rhs) {
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ExactNumber result(lhs);
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result -= rhs;
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return result;
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}
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ExactNumber operator*(const ExactNumber& lhs, const ExactNumber& rhs) {
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ExactNumber result(lhs);
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result *= rhs;
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return result;
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}
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ExactNumber operator/(const ExactNumber& lhs, const ExactNumber& rhs) {
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ExactNumber result(lhs);
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result /= rhs;
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return result;
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}
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bool ExactNumber::operator==(const ExactNumber& rhs) const {
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return numer == rhs.numer && denom == rhs.denom;
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}
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bool ExactNumber::operator!=(const ExactNumber& rhs) const {
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return numer != rhs.numer || denom != rhs.denom;
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}
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bool ExactNumber::operator<(const ExactNumber& rhs) const {
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return numer * rhs.denom < denom * rhs.numer;
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}
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bool ExactNumber::operator>(const ExactNumber& rhs) const {
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return numer * rhs.denom > denom * rhs.numer;
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}
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bool ExactNumber::operator<=(const ExactNumber& rhs) const {
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return numer * rhs.denom <= denom * rhs.numer;
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}
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bool ExactNumber::operator>=(const ExactNumber& rhs) const {
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return numer * rhs.denom >= denom * rhs.numer;
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}
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ostream& operator<<(ostream& os, const ExactNumber& n) {
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os << n.numer << "/" << n.denom;
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return os;
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}
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