# `EEVM.Transaction.IntrinsicGas`
[🔗](https://github.com/mw2000/eevm/blob/v0.1.0/lib/eevm/transaction/intrinsic_gas.ex#L1)

Intrinsic transaction gas calculation.

Covers the base transaction envelope plus static costs derived from
calldata, contract creation, access-list entries, and EIP-7702
authorizations — the upfront gas charged before EVM execution begins.

# `calculate`

```elixir
@spec calculate(EEVM.TxEnv.t(), EEVM.HardforkConfig.t()) :: non_neg_integer()
```

Returns the intrinsic gas of `tx` under `hardfork`: the 21,000 base, its
calldata, contract creation (32,000 from Homestead, EIP-2, plus 2 per
initcode word from Shanghai, EIP-3860), access-list entries (EIP-2930), and
25,000 per authorization (EIP-7702).

# `calldata_floor_gas_cost`

```elixir
@spec calldata_floor_gas_cost(EEVM.TxEnv.t(), EEVM.HardforkConfig.t()) ::
  non_neg_integer()
```

EIP-7623 calldata floor from Prague, 0 before.

# `minimum_gas_limit`

```elixir
@spec minimum_gas_limit(EEVM.TxEnv.t(), EEVM.HardforkConfig.t()) :: non_neg_integer()
```

Lowest valid gas limit: the larger of intrinsic gas and the calldata floor.

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*Consult [api-reference.md](api-reference.md) for complete listing*