amount.h 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  #ifndef BITCOIN_CONSENSUS_AMOUNT_H
   7  #define BITCOIN_CONSENSUS_AMOUNT_H
   8  
   9  #include <cstdint>
  10  
  11  /** Amount in satoshis (Can be negative) */
  12  typedef int64_t CAmount;
  13  
  14  /** The amount of satoshis in one BTC. */
  15  static constexpr CAmount COIN = 100000000;
  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 constexpr CAmount MAX_MONEY = 21000000 * COIN;
  27  inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
  28  
  29  #endif // BITCOIN_CONSENSUS_AMOUNT_H
  30