Crate perfgate_stats 

Statistical functions for benchmarking analysis.

This crate provides pure statistical functions with no I/O dependencies. It is designed to be used by perfgate-domain and can be independently tested and versioned.

Part of the perfgate workspace.

Overview

The crate provides:

• Summary statistics (median, min, max) for u64 and f64 slices
• Percentile calculation
• Mean and variance computation
• Trend analysis with linear regression and drift classification

Modules

trend

Trend analysis for predicting budget breaches.

Enums

StatsError

Functions

mean_and_variance

Compute sample mean and unbiased variance (Welford’s algorithm).

median_f64_sorted

median_u64_sorted

percentile

Compute the q-th percentile (0.0–1.0) using linear interpolation.

summarize_f64

Compute min, max, and median for an f64 slice.

summarize_u64

Compute min, max, and median for a u64 slice.