Library for Solidity bit operation

Why

Solidity for easy bit operations!

How to Use

Import into YourContracts

npm i bitope

or

yarn bitope

using

import { BitOpe } from 'bitope/contracts/libs/BitOpe.sol';

using BitOpe for uint256;
using BitOpe for uint64;

access

uint256 testval,res;
testval = testval.set128(0,123);
testval = testval.set128(1,456);
res = testval.get128(0);    // res = 123
res = testval.get128(1);    // res = 456

// 256bit manage
uint256 testval;
bool res;
// bit5 false -> true
res = testval.get256bit(5);    // res = false
testval = testval.set256bit(5,true);
res = testval.get256bit(5);    // res = true

Functions

for uint256

bit	packs	max vaslue
128	2	340,282,366,920,938,463,463,374,607,431,768,211,455
64	4	18,446,744,073,709,551,615
32	8	4,294,967,295
16	16	65,535
8	32	255

for uint64

bit	packs	max vaslue
32	2	4,294,967,295
16	4	65,535
8	8	255