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Use bytes8 index access (#19) 

Co-authored-by: Alex Beregszaszi <alex@rtfs.hu>
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chriseth 2020-05-15 18:47:21 +02:00 committed by GitHub
parent 8f2c64485e
commit a2e1e5aef0
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1 changed files with 10 additions and 9 deletions
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19
deposit_contract.sol
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@ -141,15 +141,16 @@ contract DepositContract is IDepositContract, ERC165 {
}
function to_little_endian_64(uint64 value) internal pure returns (bytes memory ret) {
// Unrolled the loop here.
ret = new bytes(8);
ret[0] = bytes1(uint8(value));
ret[1] = bytes1(uint8(value >> 8));
ret[2] = bytes1(uint8(value >> 16));
ret[3] = bytes1(uint8(value >> 24));
ret[4] = bytes1(uint8(value >> 32));
ret[5] = bytes1(uint8(value >> 40));
ret[6] = bytes1(uint8(value >> 48));
ret[7] = bytes1(uint8(value >> 56));
bytes8 bytesValue = bytes8(value);
// Byteswapping during copying to bytes.
ret[0] = bytesValue[7];
ret[1] = bytesValue[6];
ret[2] = bytesValue[5];
ret[3] = bytesValue[4];
ret[4] = bytesValue[3];
ret[5] = bytesValue[2];
ret[6] = bytesValue[1];
ret[7] = bytesValue[0];
}
}