amount.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin 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>
 
extern const std::string CURRENCY_UNIT;
 
typedef int64_t CAmount;
 
static const CAmount COIN = 100000000;
static const CAmount CENT = 1000000;
static const CAmount MIN_FEE = COIN / 10000;
static const CAmount MAX_FEE = COIN / 100;
 
static const CAmount MAX_MONEY_OUT = 70000000 * COIN;
inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY_OUT); }
 
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 nSize);
    CFeeRate(const CFeeRate& other) { nSatoshisPerK = other.nSatoshisPerK; }
 
    CAmount GetFee(size_t size) const;                  // unit returned is satoshis
    CAmount GetFeePerK() const { return GetFee(1000); } // satoshis-per-1000-bytes
 
    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; }
    std::string ToString() const;
 
    ADD_SERIALIZE_METHODS;
 
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion)
    {
        READWRITE(nSatoshisPerK);
    }
};
 
#endif //  BITCOIN_AMOUNT_H