chore(vm): unify Uint256 usage across u256 hints and split quotient via Uint512 #2237
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Hey @Forostovec, thanks for the contribution! Could you also update the changelog?
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| let a = Uint256::from_var_name("a", vm, ids_data, ap_tracking)?; | ||
| let a_high = a.high; | ||
| //Main logic | ||
| //memory[ap] = 1 if 0 <= (ids.a.high % PRIME) < 2 ** 127 else 0 | ||
| let result: Felt252 = | ||
| if *a_high >= Felt252::ZERO && a_high.as_ref() <= &Felt252::from(i128::MAX) { | ||
| if *a_high.as_ref() >= Felt252::ZERO && a_high.as_ref() <= &Felt252::from(i128::MAX) { |
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This would imply fetching a.low, but not using it, right?
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| let div = if div_offset_low == 0 && div_offset_high == 1 { | ||
| // Standard Uint256 layout | ||
| Uint256::from_var_name("div", vm, ids_data, ap_tracking)? | ||
| } else { | ||
| let div_addr = get_relocatable_from_var_name("div", vm, ids_data, ap_tracking)?; | ||
| Uint256::from_base_addr_with_offsets(div_addr, "div", vm, div_offset_low, div_offset_high)? | ||
| }; | ||
| let div_low = div.low.as_ref(); | ||
| let div_high = div.high.as_ref(); |
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Here could we call from_base_addr_with_offsets directly and avoid the conditional? It would make the function easier to read.
Also, in this function we are packing the U256 into a bigint manually. Could you modify it to call pack? Given that this PR is for unifying U256 usage in general, we can include it.
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These changes remove duplicated packing logic, standardize error paths, and align uint256 hint implementations with the existing UintNNN helper patterns