// Copyright (c) 2009-2010 Satoshi Nakamoto

// Copyright (c) 2009-2022 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) {

  Branch (16:9): [True: 74.3k, False: 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) {

  Branch (31:9): [True: 147k, False: 624k]
  Branch (31:22): [True: 147k, False: 0]

        if (nSatoshisPerK > 0) nFee = CAmount(1);

  Branch (32:13): [True: 0, False: 147k]

        if (nSatoshisPerK < 0) nFee = CAmount(-1);

  Branch (33:13): [True: 0, False: 147k]

    }

    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);

  Branch (42:5): [True: 44.3k, False: 8.11k]

    default:                      return strprintf("%d.%08d %s/kvB", nSatoshisPerK / COIN, nSatoshisPerK % COIN, CURRENCY_UNIT);

  Branch (43:5): [True: 8.11k, False: 44.3k]

    }

}