https://github.com/rainlanguage/rain.math.binary

Binary math in solidity.
https://github.com/rainlanguage/rain.math.binary

Last synced: 17 days ago
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Binary math in solidity.

• Host: GitHub
• URL: https://github.com/rainlanguage/rain.math.binary
• Owner: rainlanguage
• License: other
• Created: 2024-06-09T15:20:54.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-12-07T11:36:22.000Z (about 2 months ago)
• Last Synced: 2024-12-07T12:23:20.374Z (about 2 months ago)
• Language: Solidity
• Size: 19.5 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# rain.math.binary

## High level

Implements binary math logic not provided by the EVM or Solidity.

Includes an implementation of CtPop (count population) that efficiently tallies

the number of 1 bits in a 256 binary value.

## Dev stuff

### Local environment & CI

Uses nixos.

Install `nix develop` - https://nixos.org/download.html.

Run `nix develop` in this repo to drop into the shell. Please ONLY use the nix

version of `foundry` for development, to ensure versions are all compatible.

Read the `flake.nix` file to find some additional commands included for dev and

CI usage.

## Legal stuff

Everything is under DecentraLicense 1.0 (DCL-1.0) which can be found in `LICENSES/`.

This is basically `CAL-1.0` which is an open source license

https://opensource.org/license/cal-1-0

The non-legal summary of DCL-1.0 is that the source is open, as expected, but

also user data in the systems that this code runs on must also be made available

to those users as relevant, and that private keys remain private.

Roughly it's "not your keys, not your coins" aware, as close as we could get in

legalese.

This is the default situation on permissionless blockchains, so shouldn't require

any additional effort by dev-users to adhere to the license terms.

This repo is REUSE 3.2 compliant https://reuse.software/spec-3.2/ and compatible

with `reuse` tooling (also available in the nix shell here).

```

nix develop -c rainix-sol-legal

```

## Contributions

Contributions are welcome **under the same license** as above.

Contributors agree and warrant that their contributions are compliant.