earl 0.5.2

AI-safe CLI for AI agents
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pub mod index;
#[cfg(feature = "local-search")]
pub mod local_fastembed;
pub mod remote_openai_compat;
pub mod service;

pub fn cosine_similarity(a: &[f32], b: &[f32]) -> f32 {
    if a.is_empty() || b.is_empty() || a.len() != b.len() {
        return 0.0;
    }

    let mut dot = 0.0;
    let mut norm_a = 0.0;
    let mut norm_b = 0.0;

    for (x, y) in a.iter().zip(b.iter()) {
        dot += x * y;
        norm_a += x * x;
        norm_b += y * y;
    }

    if norm_a == 0.0 || norm_b == 0.0 {
        return 0.0;
    }

    dot / (norm_a.sqrt() * norm_b.sqrt())
}