amount.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_AMOUNT_H
#define BITCOIN_AMOUNT_H
 
#include "serialize.h"
 
#include <stdlib.h>
#include <string>
 
typedef int64_t CAmount;
 
static const CAmount COIN = 100000000;
static const CAmount CENT = 1000000;
 
extern const std::string CURRENCY_UNIT;
 
static const CAmount MAX_MONEY = 10000000000 * COIN; // Dogecoin: maximum of 100B coins (given some randomness), max transaction 10,000,000,000
inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
 
class CFeeRate
{
private:
    CAmount nSatoshisPerK; // unit is satoshis-per-1,000-bytes
public:
    CFeeRate() : nSatoshisPerK(0) { }
    explicit CFeeRate(const CAmount& _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) { }
    CFeeRate(const CAmount& nFeePaid, size_t nBytes);
    CFeeRate(const CFeeRate& other) { nSatoshisPerK = other.nSatoshisPerK; }
    CAmount GetFee(size_t nBytes) const;
    CAmount GetFeePerK() const { return GetFee(1000); }
    friend bool operator<(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK < b.nSatoshisPerK; }
    friend bool operator>(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK > b.nSatoshisPerK; }
    friend bool operator==(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK == b.nSatoshisPerK; }
    friend bool operator<=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK <= b.nSatoshisPerK; }
    friend bool operator>=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK >= b.nSatoshisPerK; }
    CFeeRate& operator+=(const CFeeRate& a) { nSatoshisPerK += a.nSatoshisPerK; return *this; }
    std::string ToString() const;
 
    ADD_SERIALIZE_METHODS;
 
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(nSatoshisPerK);
    }
};
 
#endif //  BITCOIN_AMOUNT_H