# movavg - Generic Moving Average calculation

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[Git repository](https://bues.ch/cgit/movavgrs.git)

[Github repository](https://github.com/mbuesch/movavgrs)

Generic [Moving Average](https://en.wikipedia.org/wiki/Moving_average) calculation for the integer types.

- i8, i16, i32, i64, i128, isize
- u8, u16, u32, u64, u128, usize

and float types

- f32, f64


## Example Cargo.toml dependencies

Add this to your Cargo.toml:

```toml
[dependencies]
movavg = "3"
```


## Example usage

```rust
// Integers
let mut avg: MovAvg<i32, i32, 3> = MovAvg::new(); // window size = 3
assert_eq!(avg.feed(10), 10);
assert_eq!(avg.feed(20), 15);
assert_eq!(avg.feed(30), 20);
assert_eq!(avg.feed(40), 30);
assert_eq!(avg.get(), 30);

// Floats
let mut avg: MovAvg<f64, f64, 3> = MovAvg::new();
assert_eq!(avg.feed(10.0), 10.0);
assert_eq!(avg.feed(20.0), 15.0);
assert_eq!(avg.feed(30.0), 20.0);
assert_eq!(avg.feed(40.0), 30.0);
assert_eq!(avg.get(), 30.0);

// Bigger accumulator
let mut avg: MovAvg<i8, i32, 3> = MovAvg::new();
assert_eq!(avg.feed(100), 100);
assert_eq!(avg.feed(100), 100); // This would overflow an i8 accumulator
```

## Cargo Feature selections

### no_std

If you want to use movavg without the `std` library (often called `no_std`), then use the following Cargo.toml dependency to disable the `std` feature:

```toml
[dependencies]
movavg = { version = "3", default-features = false }
```

Currently the `no_std` variant supports all functionality that the default `std` variant supports. But that may change in future.

### fastfloat

The `fastfloat` feature can be used to enable much faster, but less accurate floating point calculations. Enabling this feature leads to bigger floating point rounding and cancellation errors.

```toml
[dependencies]
movavg = { version = "3", features = ["fastfloat"] }
```

This feature may also be used together with disabled `std` feature (see `no_std`).


## MSRV: Minimum supported Rust compiler version

Requires Rust compiler version 1.61 or later.


## License

Copyright (c) 2021-2026 Michael Büsch <m@bues.ch>

Licensed under the Apache License version 2.0 or the MIT license, at your option.
