44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
// Copyright (c) 2023-2023 The Zcash developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or https://www.opensource.org/licenses/mit-license.php .
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#ifndef ZCASH_ZIP317_H
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#define ZCASH_ZIP317_H
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#include "amount.h"
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#include "primitives/transaction.h"
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#include <cstdint>
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#include <cstddef>
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#include <vector>
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// Constants for fee calculation.
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static const CAmount MARGINAL_FEE = 5000;
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static const size_t GRACE_ACTIONS = 2;
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static const size_t P2PKH_STANDARD_INPUT_SIZE = 150;
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static const size_t P2PKH_STANDARD_OUTPUT_SIZE = 34;
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// Constants for block template construction.
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static const int64_t WEIGHT_RATIO_SCALE = INT64_C(10000000000000000);
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static const int64_t WEIGHT_RATIO_CAP = 4;
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static const size_t DEFAULT_BLOCK_UNPAID_ACTION_LIMIT = 50;
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/// This is the lowest the conventional fee can be in ZIP 317.
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static const CAmount MINIMUM_FEE = MARGINAL_FEE * GRACE_ACTIONS;
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/// Return the conventional fee for the given `logicalActionCount` calculated according to
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/// <https://zips.z.cash/zip-0317#fee-calculation>.
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CAmount CalculateConventionalFee(size_t logicalActionCount);
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/// Return the number of logical actions calculated according to
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/// <https://zips.z.cash/zip-0317#fee-calculation>.
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size_t CalculateLogicalActionCount(
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const std::vector<CTxIn>& vin,
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const std::vector<CTxOut>& vout,
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unsigned int joinSplitCount,
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unsigned int saplingSpendCount,
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unsigned int saplingOutputCount,
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unsigned int orchardActionCount);
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#endif // ZCASH_ZIP317_H
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