fix(l1): unifiy fake_exponential to a single U256 function

[fedacking]

Motivation

There were multiple functions implementing the eip4844 helper function fake_exponential. These functions should be unified to a single U256 implementation that properly takes into account the possible overflow.

Description

• Removed fake_exponential function in LEVM crate
• Removed fake_exponential_checked function in block.rs
• Changed fake_exponential function signature to be U256
• Changed base_fee_per_blob_gas to be U256 where is it used
• Added a test for the 400M limit where the function still operates

[github-actions]

Lines of code report

Total lines added: 41
Total lines removed: 32
Total lines changed: 73

Detailed view

+------------------------------------------------+-------+------+
| File                                           | Lines | Diff |
+------------------------------------------------+-------+------+
| ethrex/crates/common/serde_utils.rs            | 633   | +22  |
+------------------------------------------------+-------+------+
| ethrex/crates/common/types/block.rs            | 878   | +8   |
+------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/l1_committer.rs     | 1063  | -1   |
+------------------------------------------------+-------+------+
| ethrex/crates/networking/rpc/eth/fee_market.rs | 231   | +2   |
+------------------------------------------------+-------+------+
| ethrex/crates/vm/levm/src/errors.rs            | 234   | +5   |
+------------------------------------------------+-------+------+
| ethrex/crates/vm/levm/src/gas_cost.rs          | 830   | -31  |
+------------------------------------------------+-------+------+
| ethrex/crates/vm/levm/src/utils.rs             | 503   | +4   |
+------------------------------------------------+-------+------+

[github-actions]

Benchmark Results Comparison

No significant difference was registered for any benchmark run.

Detailed Results

Benchmark Results: BubbleSort

Command	Mean [s]	Min [s]	Max [s]	Relative
main_revm_BubbleSort	4.769 ± 0.011	4.755	4.789	1.04 ± 0.00
main_levm_BubbleSort	4.634 ± 0.013	4.611	4.655	1.01 ± 0.00
pr_revm_BubbleSort	4.766 ± 0.024	4.731	4.795	1.04 ± 0.01
pr_levm_BubbleSort	4.604 ± 0.006	4.594	4.611	1.00

Benchmark Results: ERC20Approval

Command	Mean [s]	Min [s]	Max [s]	Relative
main_revm_ERC20Approval	1.555 ± 0.012	1.543	1.580	1.00
main_levm_ERC20Approval	1.680 ± 0.045	1.657	1.807	1.08 ± 0.03
pr_revm_ERC20Approval	1.568 ± 0.010	1.557	1.588	1.01 ± 0.01
pr_levm_ERC20Approval	1.670 ± 0.010	1.660	1.694	1.07 ± 0.01

Benchmark Results: ERC20Mint

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ERC20Mint	188.3 ± 1.0	187.0	189.8	1.00 ± 0.01
main_levm_ERC20Mint	206.0 ± 0.7	204.8	207.0	1.10 ± 0.01
pr_revm_ERC20Mint	187.8 ± 1.6	185.4	190.5	1.00
pr_levm_ERC20Mint	206.3 ± 0.8	205.5	207.8	1.10 ± 0.01

Benchmark Results: ERC20Transfer

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ERC20Transfer	357.5 ± 2.7	354.2	363.6	1.00
main_levm_ERC20Transfer	395.5 ± 3.7	391.0	404.0	1.11 ± 0.01
pr_revm_ERC20Transfer	358.8 ± 2.4	356.7	361.8	1.00 ± 0.01
pr_levm_ERC20Transfer	394.5 ± 2.2	391.5	397.8	1.10 ± 0.01

Benchmark Results: Factorial

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Factorial	243.9 ± 0.9	242.5	245.3	1.01 ± 0.00
main_levm_Factorial	284.8 ± 18.5	278.0	337.5	1.18 ± 0.08
pr_revm_Factorial	241.6 ± 0.7	240.9	243.1	1.00
pr_levm_Factorial	280.2 ± 0.8	278.9	281.6	1.16 ± 0.00

Benchmark Results: FactorialRecursive

Command	Mean [s]	Min [s]	Max [s]	Relative
main_revm_FactorialRecursive	1.686 ± 0.035	1.593	1.726	1.00
main_levm_FactorialRecursive	8.659 ± 0.048	8.598	8.735	5.14 ± 0.11
pr_revm_FactorialRecursive	1.691 ± 0.025	1.654	1.727	1.00 ± 0.03
pr_levm_FactorialRecursive	8.661 ± 0.075	8.537	8.781	5.14 ± 0.11

Benchmark Results: Fibonacci

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Fibonacci	215.8 ± 0.7	214.7	216.9	1.00
main_levm_Fibonacci	260.4 ± 5.7	254.4	268.8	1.21 ± 0.03
pr_revm_Fibonacci	216.8 ± 1.9	214.7	221.7	1.00 ± 0.01
pr_levm_Fibonacci	261.4 ± 3.5	257.1	268.1	1.21 ± 0.02

Benchmark Results: FibonacciRecursive

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_FibonacciRecursive	879.9 ± 7.1	868.9	893.2	1.12 ± 0.01
main_levm_FibonacciRecursive	782.7 ± 4.5	776.5	789.8	1.00
pr_revm_FibonacciRecursive	875.0 ± 11.5	861.0	902.3	1.12 ± 0.02
pr_levm_FibonacciRecursive	787.1 ± 6.1	779.2	799.6	1.01 ± 0.01

Benchmark Results: ManyHashes

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ManyHashes	12.7 ± 0.1	12.5	12.9	1.01 ± 0.01
main_levm_ManyHashes	13.8 ± 0.1	13.7	14.0	1.10 ± 0.01
pr_revm_ManyHashes	12.5 ± 0.1	12.5	12.8	1.00
pr_levm_ManyHashes	13.8 ± 0.1	13.7	14.0	1.10 ± 0.01

Benchmark Results: MstoreBench

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_MstoreBench	269.4 ± 3.1	266.5	275.2	1.06 ± 0.01
main_levm_MstoreBench	254.3 ± 1.3	252.5	256.3	1.00
pr_revm_MstoreBench	269.3 ± 3.1	266.6	275.2	1.06 ± 0.01
pr_levm_MstoreBench	256.5 ± 4.2	252.8	266.8	1.01 ± 0.02

Benchmark Results: Push

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Push	299.8 ± 1.8	297.5	303.2	1.00
main_levm_Push	307.8 ± 1.4	306.4	310.3	1.03 ± 0.01
pr_revm_Push	300.4 ± 1.1	298.8	302.2	1.00 ± 0.01
pr_levm_Push	309.5 ± 8.9	304.0	334.2	1.03 ± 0.03

Benchmark Results: SstoreBench_no_opt

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_SstoreBench_no_opt	223.7 ± 7.6	219.7	243.0	2.49 ± 0.09
main_levm_SstoreBench_no_opt	89.9 ± 1.1	88.3	91.0	1.00
pr_revm_SstoreBench_no_opt	220.8 ± 1.6	219.9	225.2	2.46 ± 0.03
pr_levm_SstoreBench_no_opt	91.2 ± 2.2	88.5	95.3	1.01 ± 0.03

[ElFantasma]

LGTM