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Added precompile 0x05 to `PrecompiledCode` enum in Strato Model, and implementation in EVM PrecompiledContracts. Implementation includes parsing of arguments, then does the minimum to return the valid type. TODO: Still need to implement the actual modular exponentiation as well as the gas calculation.
Note: Does not handle all edge cases handled by geth. TODO: Gas calculation for modExp precompile
…f mult_complexity. TODO implement multComplexity to complete gas calculation.
Implemented multComplexity in accordance with EIP-198.
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Implements the modExp Precompile as seen in Ethereum Byzantium Fork and laid out in EIP-198.
Includes the corresponding gas calculation.
Please note, this is a little rough around the edges. PowMod could be further optimized, the output padded, etc. This is just a first pass at the implementation.