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       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         [ -  + ]:          1 : inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
      28                 :            : 
      29                 :            : #endif // BITCOIN_CONSENSUS_AMOUNT_H