Line data    Source code

       1             : // Copyright (c) 2009-2010 Satoshi Nakamoto
       2             : // Copyright (c) 2009-2021 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      790318 : inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
      28             : 
      29             : #endif // BITCOIN_CONSENSUS_AMOUNT_H