feerate.cpp raw

   1  // Copyright (c) 2009-2010 Satoshi Nakamoto
   2  // Copyright (c) 2009-present The Bitcoin Core developers
   3  // Distributed under the MIT software license, see the accompanying
   4  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5  
   6  #include <consensus/amount.h>
   7  #include <policy/feerate.h>
   8  #include <tinyformat.h>
   9  
  10  
  11  CFeeRate::CFeeRate(const CAmount& nFeePaid, int32_t virtual_bytes)
  12  {
  13      if (virtual_bytes > 0) {
  14          m_feerate = FeePerVSize(nFeePaid, virtual_bytes);
  15      } else {
  16          m_feerate = FeePerVSize();
  17      }
  18  }
  19  
  20  CAmount CFeeRate::GetFee(int32_t virtual_bytes) const
  21  {
  22      Assume(virtual_bytes >= 0);
  23      if (m_feerate.IsEmpty()) { return CAmount(0);}
  24      CAmount nFee = CAmount(m_feerate.EvaluateFeeUp(virtual_bytes));
  25      if (nFee == 0 && virtual_bytes != 0 && m_feerate.fee < 0) return CAmount(-1);
  26      return nFee;
  27  }
  28  
  29  std::string CFeeRate::ToString(FeeRateFormat fee_rate_format) const
  30  {
  31      const CAmount feerate_per_kvb{GetFeePerK()};
  32      switch (fee_rate_format) {
  33      case FeeRateFormat::BTC_KVB: return strprintf("%d.%08d %s/kvB", feerate_per_kvb / COIN, feerate_per_kvb % COIN, CURRENCY_UNIT);
  34      case FeeRateFormat::SAT_VB: return strprintf("%d.%03d %s/vB", feerate_per_kvb / 1000, feerate_per_kvb % 1000, CURRENCY_ATOM);
  35      } // no default case, so the compiler can warn about missing cases
  36      assert(false);
  37  }
  38