src/amount.h

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2016 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 #ifndef BITCOIN_AMOUNT_H
   7 #define BITCOIN_AMOUNT_H
   8
   9 #include <stdint.h>
  10
  11 /** Amount in satoshis (Can be negative) */
  12 typedef int64_t CAmount;
  13
  14 static const CAmount COIN = 100000000;
  15 static const CAmount CENT = 1000000;
  16
  17 /** No amount larger than this (in satoshi) is valid.
  18  *
  19  * Note that this constant is *not* the total money supply, which in Bitcoin
  20  * currently happens to be less than 21,000,000 BTC for various reasons, but
  21  * rather a sanity check. As this sanity check is used by consensus-critical
  22  * validation code, the exact value of the MAX_MONEY constant is consensus
  23  * critical; in unusual circumstances like a(nother) overflow bug that allowed
  24  * for the creation of coins out of thin air modification could lead to a fork.
  25  * */
  26 static const CAmount MAX_MONEY = 21000000 * COIN;
  27 inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
  28
  29 #endif //  BITCOIN_AMOUNT_H