1 files changed, 31 insertions, 0 deletions
diff --git a/src/amount.cpp b/src/amount.cpp
new file mode 100644
index 0000000000..e6f5b7d440
--- /dev/null
+++ b/src/amount.cpp
@@ -0,0 +1,31 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2014 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "amount.h"
+
+#include "tinyformat.h"
+
+CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize)
+{
+    if (nSize > 0)
+        nSatoshisPerK = nFeePaid*1000/nSize;
+    else
+        nSatoshisPerK = 0;
+}
+
+CAmount CFeeRate::GetFee(size_t nSize) const
+{
+    CAmount nFee = nSatoshisPerK*nSize / 1000;
+
+    if (nFee == 0 && nSatoshisPerK > 0)
+        nFee = nSatoshisPerK;
+
+    return nFee;
+}
+
+std::string CFeeRate::ToString() const
+{
+    return strprintf("%d.%08d BTC/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN);
+}