Function calculate_initial_tx_gas 

pub fn calculate_initial_tx_gas(
    spec_id: SpecId,
    input: &[u8],
    is_create: bool,
    access_list_accounts: u64,
    access_list_storages: u64,
    authorization_list_num: u64,
) -> InitialAndFloorGas

Initial gas that is deducted for transaction to be included. Initial gas contains initial stipend gas, gas for access list and input data.

Returns

• Intrinsic gas
• Number of tokens in calldata