Bitcoin CAmount について
ソースコードを読んでいて、CAmount ってなんだったっけ? てよくなるので、メモ
amount.h
#ifndef BITCOIN_AMOUNT_H #define BITCOIN_AMOUNT_H #include <stdint.h> /** Amount in satoshis (Can be negative) */ typedef int64_t CAmount; // 1BTC = 100000000satoshi // 1BTC = 1 * COIN static const CAmount COIN = 100000000; static const CAmount CENT = 1000000; /** No amount larger than this (in satoshi) is valid. * * Note that this constant is *not* the total money supply, which in Bitcoin * currently happens to be less than 21,000,000 BTC for various reasons, but * rather a sanity check. As this sanity check is used by consensus-critical * validation code, the exact value of the MAX_MONEY constant is consensus * critical; in unusual circumstances like a(nother) overflow bug that allowed * for the creation of coins out of thin air modification could lead to a fork. * */ // 発行量 の最大量 static const CAmount MAX_MONEY = 21000000 * COIN; // 0 <= 発行量 <= MAX_MONEY inline bool MoneyRange(const CAmount& nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); } #endif // BITCOIN_AMOUNT_H
CAmount は int_64_t です。
Bitcoinの総発行量については、以下を参考に。
www.neuralsparrow.com