mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-01-26 11:13:23 -03:00
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
|
// Copyright (c) 2009-2021 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#include <consensus/amount.h>
|
|
#include <policy/feerate.h>
|
|
#include <tinyformat.h>
|
|
|
|
#include <cmath>
|
|
|
|
CFeeRate::CFeeRate(const CAmount& nFeePaid, uint32_t num_bytes)
|
|
{
|
|
const int64_t nSize{num_bytes};
|
|
|
|
if (nSize > 0) {
|
|
nSatoshisPerK = nFeePaid * 1000 / nSize;
|
|
} else {
|
|
nSatoshisPerK = 0;
|
|
}
|
|
}
|
|
|
|
CAmount CFeeRate::GetFee(uint32_t num_bytes) const
|
|
{
|
|
const int64_t nSize{num_bytes};
|
|
|
|
// Be explicit that we're converting from a double to int64_t (CAmount) here.
|
|
// We've previously had issues with the silent double->int64_t conversion.
|
|
CAmount nFee{static_cast<CAmount>(std::ceil(nSatoshisPerK * nSize / 1000.0))};
|
|
|
|
if (nFee == 0 && nSize != 0) {
|
|
if (nSatoshisPerK > 0) nFee = CAmount(1);
|
|
if (nSatoshisPerK < 0) nFee = CAmount(-1);
|
|
}
|
|
|
|
return nFee;
|
|
}
|
|
|
|
std::string CFeeRate::ToString(const FeeEstimateMode& fee_estimate_mode) const
|
|
{
|
|
switch (fee_estimate_mode) {
|
|
case FeeEstimateMode::SAT_VB: return strprintf("%d.%03d %s/vB", nSatoshisPerK / 1000, nSatoshisPerK % 1000, CURRENCY_ATOM);
|
|
default: return strprintf("%d.%08d %s/kvB", nSatoshisPerK / COIN, nSatoshisPerK % COIN, CURRENCY_UNIT);
|
|
}
|
|
}
|