solidity-float-point-calculation
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BANKEX
Proof of concept of basic math operation with Solidity
Floating point math library
Brought to you by Bankex Foundation
WIP, not ready for production
Fuctionality
Float point number is represented in a binary256 IEEE standard (so library operates on bytes32 and uint256[3] internally).
Included functions:
- add
- sub
- mul
- div (naive implementation, slow)
- log2
- fast inverse sqrt
- fast div (using fast inverse sqrt)
Planned functions:
- exp
Known issues:
- Non-normalized numbers are not properly represented
- Overflow is not processed
What's inside
Crude core for library and set of tests, including helper functions to encode BigNumber into bytes32. Library is in a form of contract for ease of compilation in deployment (see Tester.sol for example).
How to run
npm install
npm test
tests.js is a set of helper and test functions.
BANKEX