src/amount.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2014 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 "amount.h"
   7
   8 #include "tinyformat.h"
   9
  10 CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize)
  11 {
  12     if (nSize > 0)
  13         nSatoshisPerK = nFeePaid*1000/nSize;
  14     else
  15         nSatoshisPerK = 0;
  16 }
  17
  18 CAmount CFeeRate::GetFee(size_t nSize) const
  19 {
  20     CAmount nFee = nSatoshisPerK*nSize / 1000;
  21
  22     if (nFee == 0 && nSatoshisPerK > 0)
  23         nFee = nSatoshisPerK;
  24
  25     return nFee;
  26 }
  27
  28 std::string CFeeRate::ToString() const
  29 {
  30     return strprintf("%d.%08d BTC/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN);
  31 }