# brazzy/floating-point-gui.de

Website that provides concise  answers to common questions about floating-point numbers.

Repository: https://github.com/brazzy/floating-point-gui.de
Canonical: https://ross.abutalabs.com/products/floating-point-guide
Homepage: http://floating-point-gui.de/
Language: HTML
License Family: other
Last push: 2024-05-20T07:35:37+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5988, "days_push": 835, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1066, forks 177 (observed 2026-08-28T04:03:26.807359+00:00)

## What it is
A static website (The Floating-Point Guide) offering concise answers to common novice questions about floating-point arithmetic, such as why 0.1 + 0.2 != 0.3, plus in-depth explanations of IEEE 754. It is built with the nanoc static site generator and published under a Creative Commons Attribution license.

## Use cases
- understand why 0.1 + 0.2 gives 0.30000000000000004
- learn how IEEE 754 floating-point numbers work
- find out when to use decimals instead of floats
- look up floating-point rounding and comparison pitfalls
- get language-specific floating-point cheat sheets for Java, Python, JavaScript, etc.

## When to choose
- you need a quick, beginner-friendly explanation of floating-point surprises
- you want concise reference material to link in answers or docs
- you need guidance on choosing exact numeric types over floats

## When to avoid
- you need a software library or tool rather than educational content
- you want a rigorous mathematical treatise on numerical analysis
- you need an interactive calculator or playground

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation
- domain: education, programming-languages
- platform: -
- tags: floating-point, ieee-754, static-site, nanoc, reference-site, algorithms, web-server

## Member repositories
- brazzy/floating-point-gui.de (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:26.807359+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:55:14.546547+00:00, confidence not recorded.
  - readme: https://github.com/brazzy/floating-point-gui.de (fetched 2026-08-28T04:03:26.807359+00:00, sha a41d2b1c9192)
  - homepage: http://floating-point-gui.de/ (fetched 2026-08-29T12:57:06.808533+00:00, sha 988e2b993ab4)
- Data as of 2026-08-30T08:39:29.467469+00:00.