176 lines
3.4 KiB
C++
176 lines
3.4 KiB
C++
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/*
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* Copyright (c) 2018, evilny0
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*
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* This file is part of cpfm.
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*
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* cpfm is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* cpm is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with cpfm. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "log.h"
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#include "money.h"
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Money::Money ()
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{
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}
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Money::Money (bmp::mpf_float_50 x)
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{
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m_amount = x;
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}
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Money::Money (int x)
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{
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m_amount = x;
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}
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Money::Money (const std::string& s)
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{
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bmp::mpf_float_50 x(s);
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m_amount = x;
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}
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Money::Money (const web::json::value& x)
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{
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if (x.is_string())
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{
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bmp::mpf_float_50 a(x.as_string());
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m_amount = a;
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}
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else if (x.is_integer())
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{
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m_amount = x.as_integer();
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}
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else if (x.is_double())
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{
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// Can't use double, or precision will be lost.
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// And way too much time will be spent wondering why a simple multiplication does not work as expected.
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bmp::mpf_float_50 a(x.serialize());
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m_amount = a;
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}
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else
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{
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lerr << "Unsupported json conversion [" << x << "]. Setting value to 0.";
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m_amount = 0;
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}
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}
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Money::~Money()
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{
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}
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Money& Money::operator=(const bmp::mpf_float_50& x)
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{
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m_amount = x;
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return *this;
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}
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Money& Money::operator=(const std::string& s)
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{
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bmp::mpf_float_50 x(s);
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m_amount = x;
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return *this;
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}
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Money& Money::operator=(const int& x)
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{
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m_amount = x;
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return *this;
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}
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Money& Money::operator+=(const Money& x)
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{
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m_amount+=x.m_amount;
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return *this;
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}
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Money& Money::operator-=(const Money& x)
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{
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m_amount-=x.m_amount;
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return *this;
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}
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Money& Money::operator*=(const Money& x)
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{
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m_amount*=x.m_amount;
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return *this;
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}
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Money& Money::operator/=(const Money& x)
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{
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m_amount/=x.m_amount;
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return *this;
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}
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bool operator==(const Money& a, const int& b)
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{
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if (b == 0)
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{
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return (abs(a.m_amount) < std::numeric_limits<bmp::mpf_float_50>::epsilon());
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}
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else
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{
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return (a.m_amount == b);
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}
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}
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bool operator<(const Money& a, const int& b)
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{
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// First, check if equal. We need to rely on epsilon.
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if (abs(a.m_amount-b) < std::numeric_limits<bmp::mpf_float_50>::epsilon())
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return false;
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return (a.m_amount<b);
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}
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bool operator==(const Money& a, const Money& b)
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{
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if (abs(b.m_amount) < std::numeric_limits<bmp::mpf_float_50>::epsilon())
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{
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return (abs(a.m_amount) < std::numeric_limits<bmp::mpf_float_50>::epsilon());
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}
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else
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{
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return (a.m_amount == b.m_amount);
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}
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}
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bool operator<(const Money& a, const Money& b)
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{
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// First, check if equal. We need to rely on epsilon.
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if (abs(a.m_amount-b.m_amount) < std::numeric_limits<bmp::mpf_float_50>::epsilon())
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return false;
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return (a.m_amount<b.m_amount);
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}
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std::ostream& operator<<(std::ostream& os, const Money& obj)
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{
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if (obj == 0)
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{
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os << "0";
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}
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else
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{
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stringstream ss;
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ss << std::fixed << std::setprecision(18) << obj.m_amount;
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os << ss.str();
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}
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return os;
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}
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