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) */
12typedef int64_t CAmount;
13
14/** The amount of satoshis in one BTC. */
15inline constexpr CAmount COIN{100'000'000};
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 * */
26inline constexpr CAmount MAX_MONEY{21'000'000 * COIN};
27inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
28
29#endif // BITCOIN_CONSENSUS_AMOUNT_H
30