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59 lines
2.3 KiB
59 lines
2.3 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2015 The Bitcoin Core developers |
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// Distributed under the MIT software license, see the accompanying |
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// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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#ifndef BITCOIN_POLICY_FEERATE_H |
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#define BITCOIN_POLICY_FEERATE_H |
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#include "amount.h" |
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#include "serialize.h" |
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#include <string> |
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extern const std::string CURRENCY_UNIT; |
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/** |
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* Fee rate in satoshis per kilobyte: CAmount / kB |
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*/ |
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class CFeeRate |
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{ |
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private: |
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CAmount nSatoshisPerK; // unit is satoshis-per-1,000-bytes |
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public: |
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/** Fee rate of 0 satoshis per kB */ |
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CFeeRate() : nSatoshisPerK(0) { } |
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template<typename I> |
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CFeeRate(const I _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) { |
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// We've previously had bugs creep in from silent double->int conversion... |
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static_assert(std::is_integral<I>::value, "CFeeRate should be used without floats"); |
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} |
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/** Constructor for a fee rate in satoshis per kB. The size in bytes must not exceed (2^63 - 1)*/ |
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CFeeRate(const CAmount& nFeePaid, size_t nBytes); |
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/** |
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* Return the fee in satoshis for the given size in bytes. |
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*/ |
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CAmount GetFee(size_t nBytes) const; |
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/** |
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* Return the fee in satoshis for a size of 1000 bytes |
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*/ |
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CAmount GetFeePerK() const { return GetFee(1000); } |
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friend bool operator<(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK < b.nSatoshisPerK; } |
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friend bool operator>(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK > b.nSatoshisPerK; } |
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friend bool operator==(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK == b.nSatoshisPerK; } |
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friend bool operator<=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK <= b.nSatoshisPerK; } |
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friend bool operator>=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK >= b.nSatoshisPerK; } |
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friend bool operator!=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK != b.nSatoshisPerK; } |
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CFeeRate& operator+=(const CFeeRate& a) { nSatoshisPerK += a.nSatoshisPerK; return *this; } |
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std::string ToString() const; |
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ADD_SERIALIZE_METHODS; |
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template <typename Stream, typename Operation> |
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inline void SerializationOp(Stream& s, Operation ser_action) { |
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READWRITE(nSatoshisPerK); |
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} |
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}; |
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#endif // BITCOIN_POLICY_FEERATE_H
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