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abit

1.0.0
1.0.0 0.4.0 0.3.3 0.3.2 0.3.1 0.3.0 0.2.4 0.2.3 0.2.2 0.2.1 0.2.0 0.1.5 0.1.4 0.1.3 0.1.2 0.1.1 0.1.0

Use Erlang atomics as a bit array or as an array of N-bit counters.

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CHANGELOG.md 

# Changelog for Abit



## v1.0.0 - 2026-08-20



  * Stability - Declared the existing public API stable for the first major release.

  * Breaking - Raised the minimum supported versions to Elixir 1.14 and OTP 25.

  * Performance - Reduced overhead in bit-array set operations, atomics membership checks, and packed-counter access.

  * Fix - Added explicit validation and errors for malformed atomics serialization payloads.

  * Tests - Added property-based coverage for bitmasks, atomics operations and serialization, and packed counters.

  * Documentation - Updated installation instructions, package metadata, Erlang documentation links, and the 64-bit bitmask contract.



## v0.4.0

  * Feature - Added fast atomics resetting via `Abit.clear/1` and `Abit.Counter.clear/1`.

  * Feature - Added bit toggling via `Abit.toggle_bit_at/2` and `Abit.Bitmask.toggle_bit_at/2`.

  * Feature - Added the missing set operations: `Abit.difference/2`, `Abit.symmetric_difference/2`, and `Abit.invert/1`.

  * Deprecation - Deprecated Abit.merge/2 in favor of `Abit.union/2` to align with standard set theory terminology.



## v0.3.3

  * Feature - Added `Abit.Atomics.serialize/1` and `Abit.Atomics.deserialize/1`.



## v0.3.2

  * Fix - Fixed a compile warning caused by using `^^^/2` in `Abit.Counter`.



## v0.3.1

  * Fix - Restored compatibility with Elixir 1.7 by avoiding `Kernel.floor/1` and `Kernel.ceil/1`.



## v0.3.0

  * BREAKING - Removed `Abit.Matrix` and extracted it to [matrax](https://hex.pm/packages/matrax).



## v0.2.4

  * Feature - Implemented the `Enumerable` protocol for `Abit.Counter`.



## v0.2.3

  * Feature - Added `add/3`, `exchange/3`, `compare_exchange/4`, `min/1`, `max/1`, and other functions to `Abit.Matrix`.

  * Feature - Implemented the `Enumerable` protocol for `Abit.Matrix`.

  * Feature - Added `Abit.Bitmask.to_list/2`.

  * Feature - Added `Abit.to_list/1`.



## v0.2.2

  * Feature - Added `Abit.Matrix` for working with atomics as an M x N matrix.



## v0.2.1

  * Performance - Improved the performance of functions in `Abit` and `Abit.Bitmask`.



## v0.2.0



### Abit

  * BREAKING - Renamed `set_bit/3` to `set_bit_at/3` for consistency with the `Abit.Bitmask` API.



### Abit.Counter

  * BREAKING - Added the `wrap_around` option. Wraparound is now disabled by default.

  * BREAKING - Replaced the custom signed and unsigned integer matching with the built-in implementation. Signed integers now wrap around as they do in Elixir.

  * BREAKING - Changed the return value of `put/3` and `add/3` to `{:ok, {index, final_value}}`, or `{:error, :value_out_of_bounds}` when `wrap_around` is `false` and the value is out of bounds.