R Observatory: Metrics for zufast version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

zufast

0.1.0Package record

Fast Portable 'C' Primitives for Parsing and Formatting Data

0packages depend

155downloads / year

79.7%test coverage

9/9flavors OK

Overview

About

Maintained by Pedro BaltazarCRAN page ↗GitHub ↗Website ↗Issues ↗

A header-only library of small, fast, portable 'C99' primitives for converting external text and bytes into native values and back: correctly rounded number parsing (from 'fast_float', through its 'C' port 'ffc.h'), shortest round-trip number formatting (from 'Ryu'), ISO 8601 dates and timestamps, booleans, universally unique identifiers (UUIDs), hexadecimal and Base64, 'XXH3' hashing (from 'xxHash'), half-precision floats, endian helpers and UTF-8 validation. Other packages use it through 'LinkingTo' alone; the 'R' functions exist to test, benchmark and demonstrate the 'C' layer.

Changes in 0.1.0

Initial CRAN release: a header-only library of small, fast, portable C99 primitives, used by other packages through LinkingTo: zufast alone.
zufast/number.h: correctly rounded parsing of double, float and 32/64-bit integers in any base 2 to 36 (with a JSON mode), through the vendored ffc.h, a C port of fast_float; shortest round-trip formatting in ECMAScript notation through the vendored Ryu; exact fixed-notation formatting and integer writers.
zufast/datetime.h: ISO 8601 / RFC 3339 date and timestamp parsing to fields, calendar arithmetic exact over the whole int32_t day range, and RFC 3339 formatting.
zufast/literal.h (booleans with per-spelling flags, literal matching, ASCII whitespace), zufast/uuid.h, zufast/hex.h and zufast/base64.h (strict, standard and URL alphabets), zufast/hash.h (XXH3 64- and 128-bit, one-shot and streaming, through the vendored xxHash), zufast/bits.h (binary16, bfloat16, endian helpers) and zufast/utf8.h (UTF-8 validation and code-point counting).

Show all changes in 0.1.0Hide the rest of the changes in 0.1.0

R functions that exercise the C layer: fast_parse_double(), fast_parse_integer(), fast_format_double(), fast_parse_date(), fast_parse_datetime(), fast_datetime_fields(), fast_format_datetime(), fast_hex_encode(), fast_hex_decode(), fast_base64_encode(), fast_base64_decode(), fast_hash(), fast_utf8_valid() and fast_info().
vignette("linking") gives the consumer recipe.

From NEWS.md in the release

Install

R (CRAN)pak (dev)Fedora (COPR)

install.packages("zufast", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("pedrobtz/zufast")

Development version from pedrobtz/zufast. Installs pak first if it is not already available.

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-zufast

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

9OK

CRAN check page ↗

Slowest check: 2.8 min · r-oldrel-windows-x86_64

Status changes

OK9 OKNow
OK5 OK2026-10-21

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMEYes · 844 wordsVignettesYes · 1 · dynamicNEWSYes · 67% structured · mentions 0.1.0Citation fileNoWebsiteYes

Help pages: 10 (1 internal)includes a package overview page
Examples that run: 100%9 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Linking to zufast HTML

How these are measured

Downloads

155

CRAN downloads in the past year

Rank #25,556 · ~0/day · ~13/mo

zufast Releases R versions

Daily download trend is not available in this view yet.

15530 days

15590 days

1551 year

Compare downloads with other packages →

How downloads are counted

Repository

pedrobtz/zufast ↗Account: pedrobtz

0Stars

0Forks

5Open issues

0Open PRs

1Releases

Last activity 2026-10-24

Responsiveness

How these are sampled

PRs merged (all time): 97%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: not measured

How these are measured

PracticesBeta

Repository github.com/pedrobtz/zufast is linked, but repository-practices checks have not run for it yet.

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Installing zufast adds no packages beyond those that come with R.

Depends (1)

R >= 4.1

Imports (0)

none

LinkingTo (0)

none

Suggests (3)

knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (8)

Pedro Baltazar

The fast_float authors

Copyright holder

fast_float, ported to C as ffc.h

Ulf Adams

Copyright holder

Ryu

Yann Collet

Copyright holder

xxHash

Bjoern Hoehrmann

Copyright holder

UTF-8 decoder state table in inst/include/zufast/utf8.h

Daniel Lemire

Copyright holder

fast_float, ported to C as ffc.h

João Paulo Magalhaes

Copyright holder

fast_float, ported to C as ffc.h

Koleman Nix

Copyright holder

ffc.h, the C port of fast_float

Releases (1)

0.1.0Latest
record
2026-10-21 · current release ·
11 days in CRAN's queue
Listed in CRAN's incoming queue from 2026-10-10 10:19 to 2026-10-21 10:55 UTC, in 60 readings.
R
R 4.6.0 released · 2026-04-24

Across CRAN, the median accepted release of the past year spent 26 hours in the queue, 90% under 11 days.How queue time is measured

Package metadata

First published: 2026-10-21
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Copyright: See inst/COPYRIGHTS.
Minimum R: ≥ 4.1
Download size: 319 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("zufast")

Format

Baltazar, P., The fast_float authors, Adams, U., Collet, Y., Hoehrmann, B., Lemire, D., Magalhaes, J. P., & Nix, K. (2026). zufast: Fast Portable 'C' Primitives for Parsing and Formatting Data (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.zufast

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for zufast version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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