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19a2d668cf
d59a518Use fixed preallocation instead of costly GetSerializeSize (Pieter Wuille)25a211aAdd optimized CSizeComputer serializers (Pieter Wuille)a2929a2Make CSerAction's ForRead() constexpr (Pieter Wuille)a603925Avoid -Wshadow errors (Pieter Wuille)5284721Get rid of nType and nVersion (Pieter Wuille)657e05aMake GetSerializeSize a wrapper on top of CSizeComputer (Pieter Wuille)fad9b66Make nType and nVersion private and sometimes const (Pieter Wuille)c2c5d42Make streams' read and write return void (Pieter Wuille)50e8a9cRemove unused ReadVersion and WriteVersion (Pieter Wuille)
73 lines
2.9 KiB
C++
73 lines
2.9 KiB
C++
// 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_AMOUNT_H
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#define BITCOIN_AMOUNT_H
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#include "serialize.h"
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#include <stdlib.h>
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#include <string>
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/** Amount in satoshis (Can be negative) */
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typedef int64_t CAmount;
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static const CAmount COIN = 100000000;
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static const CAmount CENT = 1000000;
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extern const std::string CURRENCY_UNIT;
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/** No amount larger than this (in satoshi) is valid.
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*
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* Note that this constant is *not* the total money supply, which in Bitcoin
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* currently happens to be less than 21,000,000 BTC for various reasons, but
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* rather a sanity check. As this sanity check is used by consensus-critical
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* validation code, the exact value of the MAX_MONEY constant is consensus
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* critical; in unusual circumstances like a(nother) overflow bug that allowed
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* for the creation of coins out of thin air modification could lead to a fork.
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* */
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static const CAmount MAX_MONEY = 21000000 * COIN;
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inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
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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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explicit CFeeRate(const CAmount& _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) { }
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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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CFeeRate(const CFeeRate& other) { nSatoshisPerK = other.nSatoshisPerK; }
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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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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_AMOUNT_H
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