tldr; Transpiling ERC20 Solidity contracts to Cairo is way sooner than transpiling them to EVM opcodes. Cairo’s quantity kind is a felt, which might be considered an integer x, within the vary -P/2 < x < P/2, the place P is a 252-bit area ingredient. To simulate 256-bit integers in Cairo we have to create a struct with two area parts, the excessive & low bits of an EVM-equivalentuint256.
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