Fix SPLIT_FELT hint

[fmoletta]

TITLE

Description

Description of the pull request changes and motivation.

Checklist

• Linked to Github Issue
• Unit tests added
• Integration tests added.
• This change requires new documentation.
  • Documentation has been added/updated.
  • CHANGELOG has been updated.

[github-actions]

Benchmark Results for unmodified programs 🚀

Command	Mean [s]	Min [s]	Max [s]	Relative
base big_factorial	3.689 ± 0.029	3.657	3.747	1.01 ± 0.01
head big_factorial	3.670 ± 0.021	3.648	3.710	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base big_fibonacci	3.211 ± 0.053	3.171	3.356	1.01 ± 0.02
head big_fibonacci	3.192 ± 0.039	3.162	3.297	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base blake2s_integration_benchmark	9.113 ± 0.081	9.041	9.237	1.01 ± 0.01
head blake2s_integration_benchmark	9.065 ± 0.072	9.006	9.207	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base compare_arrays_200000	3.237 ± 0.029	3.209	3.314	1.01 ± 0.01
head compare_arrays_200000	3.199 ± 0.009	3.184	3.212	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base dict_integration_benchmark	2.198 ± 0.006	2.189	2.207	1.01 ± 0.00
head dict_integration_benchmark	2.187 ± 0.005	2.180	2.194	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base field_arithmetic_get_square_benchmark	1.678 ± 0.007	1.666	1.689	1.00
head field_arithmetic_get_square_benchmark	1.678 ± 0.009	1.671	1.703	1.00 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base integration_builtins	9.106 ± 0.075	9.038	9.232	1.01 ± 0.01
head integration_builtins	9.051 ± 0.058	9.006	9.168	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base keccak_integration_benchmark	9.279 ± 0.106	9.188	9.475	1.01 ± 0.01
head keccak_integration_benchmark	9.152 ± 0.048	9.101	9.264	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base linear_search	3.279 ± 0.012	3.267	3.298	1.01 ± 0.00
head linear_search	3.253 ± 0.009	3.243	3.271	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_cmp_and_pow_integration_benchmark	2.339 ± 0.010	2.325	2.357	1.01 ± 0.01
head math_cmp_and_pow_integration_benchmark	2.323 ± 0.020	2.304	2.372	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_integration_benchmark	2.140 ± 0.016	2.119	2.173	1.02 ± 0.01
head math_integration_benchmark	2.092 ± 0.009	2.079	2.111	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base memory_integration_benchmark	1.884 ± 0.023	1.865	1.933	1.01 ± 0.01
head memory_integration_benchmark	1.863 ± 0.005	1.854	1.871	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base operations_with_data_structures_benchmarks	2.083 ± 0.009	2.071	2.101	1.00 ± 0.01
head operations_with_data_structures_benchmarks	2.077 ± 0.007	2.067	2.086	1.00

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
base pedersen	831.9 ± 11.2	826.1	863.7	1.01 ± 0.01
head pedersen	825.3 ± 2.2	823.2	830.6	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base poseidon_integration_benchmark	1.520 ± 0.009	1.514	1.544	1.01 ± 0.01
head poseidon_integration_benchmark	1.510 ± 0.002	1.504	1.512	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base secp_integration_benchmark	2.590 ± 0.006	2.581	2.598	1.01 ± 0.01
head secp_integration_benchmark	2.560 ± 0.012	2.541	2.583	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base set_integration_benchmark	1.268 ± 0.006	1.263	1.284	1.03 ± 0.01
head set_integration_benchmark	1.231 ± 0.007	1.227	1.252	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base uint256_integration_benchmark	5.966 ± 0.063	5.914	6.115	1.01 ± 0.01
head uint256_integration_benchmark	5.914 ± 0.042	5.865	5.994	1.00

[codecov]

Codecov Report

Merging #1387 (2aa405b) into main (f09766c) will increase coverage by 0.00%.
Report is 1 commits behind head on main.
The diff coverage is 99.42%.

@@           Coverage Diff            @@
##             main    #1387    +/-   ##
========================================
  Coverage   97.49%   97.50%            
========================================
  Files          93       93            
  Lines       37913    38081   +168     
========================================
+ Hits        36962    37129   +167     
- Misses        951      952     +1     

Files Changed	Coverage Δ
...int_processor/builtin_hint_processor/math_utils.rs	98.26% <99.42%> (+0.11%)	⬆️
...int_processor/builtin_hint_processor_definition.rs	99.09% <100.00%> (+<0.01%)	⬆️

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