Function calc_effective_gas_price

pub fn calc_effective_gas_price(
    max_fee_per_gas: u128,
    max_priority_fee_per_gas: u128,
    base_fee: Option<u64>,
) -> u128

Calculates the effective gas price for a dynamic fee transaction.

This is a utility function for EIP-1559 and similar transactions that use dynamic fees.

For EIP-1559 transactions, the effective gas price is calculated as:

• If no base fee: returns max_fee_per_gas
• If base fee exists: returns min(max_fee_per_gas, max_priority_fee_per_gas + base_fee)

This ensures that the total fee doesn’t exceed the maximum fee per gas, while also ensuring that the priority fee doesn’t exceed the maximum priority fee per gas.