Crate op_alloy_flz 

op-alloy-flz

Tiny crate containing FastLZ compression length utilities.

Constants

L1_COST_FASTLZ_COEF

https://github.com/ethereum-optimism/op-geth/blob/647c346e2bef36219cc7b47d76b1cb87e7ca29e4/core/types/rollup_cost.go#L79

L1_COST_INTERCEPT

https://github.com/ethereum-optimism/op-geth/blob/647c346e2bef36219cc7b47d76b1cb87e7ca29e4/core/types/rollup_cost.go#L78 Inverted to be used with saturating_sub.

MIN_TX_SIZE_SCALED

https://github.com/ethereum-optimism/op-geth/blob/647c346e2bef36219cc7b47d76b1cb87e7ca29e4/core/types/rollup_cost.go#82

NON_ZERO_BYTE_COST

Cost per non-zero byte.

ZERO_BYTE_COST

Cost per zero byte.

Functions

data_gas_fjord

Calculate the data gas for posting the transaction on L1.

flz_compress_len

Returns the length of the data after compression through FastLZ.

tx_estimated_size_fjord

Calculate the estimated compressed transaction size in bytes, scaled by 1e6. This value is computed based on the following formula: max(minTransactionSize, intercept + fastlzCoef*fastlzSize)

tx_estimated_size_fjord_bytes

Calculate the estimated compressed transaction size in bytes. This value is computed based on the following formula: max(minTransactionSize, intercept + fastlzCoef*fastlzSize) / 1e6