43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2016 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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#include "amount.h"
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#include "tinyformat.h"
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const std::string CURRENCY_UNIT = "BTC";
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CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nBytes_)
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{
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assert(nBytes_ <= uint64_t(std::numeric_limits<int64_t>::max()));
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int64_t nSize = int64_t(nBytes_);
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if (nSize > 0)
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nSatoshisPerK = nFeePaid * 1000 / nSize;
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else
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nSatoshisPerK = 0;
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}
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CAmount CFeeRate::GetFee(size_t nBytes_) const
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{
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assert(nBytes_ <= uint64_t(std::numeric_limits<int64_t>::max()));
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int64_t nSize = int64_t(nBytes_);
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CAmount nFee = nSatoshisPerK * nSize / 1000;
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if (nFee == 0 && nSize != 0) {
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if (nSatoshisPerK > 0)
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nFee = CAmount(1);
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if (nSatoshisPerK < 0)
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nFee = CAmount(-1);
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}
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return nFee;
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}
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std::string CFeeRate::ToString() const
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{
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return strprintf("%d.%08d %s/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN, CURRENCY_UNIT);
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}
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