//! Backend implementations for different numerical types.
//!
//! This module provides implementations of the raw traits for various numerical backends.
//!
//! ## Available Backends
//!
//! - [`native64`]: Native 64-bit floating-point backend using `f64` and `Complex<f64>`
//! - `rug`: Arbitrary-precision backend using the `rug` crate (requires `rug` feature)
/// Native 64-bit floating-point backend using `f64` and `Complex<f64>`.
/// Arbitrary-precision backend using the `rug` crate.
///
/// This module is only available when the `rug` feature is enabled.