Inside Bitcoin
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Inside Bitcoin
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The code behind the network, with room to understand it.
Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.
1// Copyright (c) 2020-present The Bitcoin Core developers2// Distributed under the MIT software license, see the accompanying3// file COPYING or http://www.opensource.org/licenses/mit-license.php.5#include <consensus/amount.h>6#include <policy/feerate.h>7#include <test/fuzz/FuzzedDataProvider.h>8#include <test/fuzz/fuzz.h>9#include <test/fuzz/util.h>11#include <cstdint>12#include <limits>13#include <string>14#include <vector>16FUZZ_TARGET(fee_rate)17{18FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());19const CAmount satoshis_per_k = ConsumeMoney(fuzzed_data_provider);20const CFeeRate fee_rate{satoshis_per_k};22(void)fee_rate.GetFeePerK();23const auto bytes = fuzzed_data_provider.ConsumeIntegralInRange<int32_t>(0, std::numeric_limits<int32_t>::max());24if (!MultiplicationOverflow(int64_t{bytes}, satoshis_per_k)) {25(void)fee_rate.GetFee(bytes);26}27(void)fee_rate.ToString();29const CAmount another_satoshis_per_k = ConsumeMoney(fuzzed_data_provider);30CFeeRate larger_fee_rate{another_satoshis_per_k};31larger_fee_rate += fee_rate;32if (satoshis_per_k != 0 && another_satoshis_per_k != 0) {33assert(fee_rate < larger_fee_rate);34assert(!(fee_rate > larger_fee_rate));35assert(!(fee_rate == larger_fee_rate));36assert(fee_rate <= larger_fee_rate);37assert(!(fee_rate >= larger_fee_rate));38assert(fee_rate != larger_fee_rate);39}40}
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