R Observatory: Metrics for PreciseSums version 0.7

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

PreciseSums

0.7Package record

Accurate Floating Point Sums and Products

2packages dependsuggested by 1

22.7Kdownloads / year

20.3%test coverage

13/13flavors OK

Overview

About

Maintained by Matthew FidlerCRAN page ↗GitHub ↗Issues ↗

Most of the time floating point arithmetic does approximately the right thing. When adding sums or having products of numbers that greatly differ in magnitude, the floating point arithmetic may be incorrect. This package implements the Kahan (1965) sum doi:10.1145/363707.363723, Neumaier (1974) sum doi:10.1002/zamm.19740540106, pairwise-sum (adapted from 'NumPy', See Castaldo (2008) doi:10.1137/070679946 for a discussion of accuracy), and arbitrary precision sum (adapted from the fsum in 'Python' ; Shewchuk (1997) https://people.eecs.berkeley.edu/~jrs/papers/robustr.pdf). In addition, products are changed to long double precision for accuracy, or changed into a log-sum for accuracy.

Changes in 0.7

Created a new non-binary linkage method with 'PreciseSumsPtr.h' in addition to 'PreciseSums.h'. To break binary package dependencies, the rxode2 internals use the function pointers, while the models built by rxode2 use the binary linkage.
As requested by CRAN use strict headers.

From NEWS.md in the release

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("PreciseSums", 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("nlmixr2/PreciseSums")

Development version from nlmixr2/PreciseSums. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-precisesums

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# 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-PreciseSums

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

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

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-PreciseSums

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.0 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-09-08
ERROR12 OK, 1 ERROR2026-09-07
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.7

README· In the repository, left out of the releaseVignettesNoNEWSYes · 100% structured · mentions 0.7Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 9 (1 internal)
Examples that run: 100%4 run in a plain check
Exported functions with examples: 44%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 44%

How these are measured

Downloads

22.7K

CRAN downloads in the past year

Rank #2,910 · ~62/day · ~1.9K/mo

Releases R versions

Daily download trend is not available in this view yet.

2K30 days

4.9K90 days

22.7K1 year

Compare downloads with other packages →

Also on1.1K r2u2 autocran22.1K conda_forge134 c2d4u

How downloads are counted

Repository

nlmixr2/precisesums ↗Organization: nlmixr2

1Stars

0Forks

0Open issues

3Open PRs

2Releases

38Commits

2Commit identities

License file reads as GPL-2.0 · 38 commits · Last activity 2026-08-27 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2023-04-22 · 12026-07-07 · 1

How these are measured

PracticesBeta

3 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/nlmixr2/precisesums on 2026-10-22.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

CRAN release process (1)

cran-comments.md

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

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-08-27
Pull request it wrote: opened by a project member
Commits: at least 1 crediting it in the message

Models named in its commits

Claude Opus 51 commit · Aug 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

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

Depends (1)

R >= 3.2

Imports (0)

none

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

20indirect

Imports 2 · LinkingTo 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

rxode2 ciuupi2

Suggests, most downloaded first

zuexact

How these are counted

Code & Tests

People & History

People (7)

Matthew Fidler

Raymond Hettinger

Copyright holder, Author

Jonathan Shewchuk

Copyright holder, Author

Nathaniel Smith

Copyright holder, Author

Julian Taylor

Copyright holder, Author

NumPy Team

Copyright holder

Python Team

Copyright holder

Releases (6)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.7Latest
record
2024-09-18 · current release · diff ↗ ·
added 1 export
.preciseSumsPtr
R
R 4.4.0 released · 2024-04-24
0.6
record
2023-04-22 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.5
record
2022-04-22 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.4
record
2020-07-10 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
0.3
record
2018-04-12 · diff ↗
0.1
record
2017-11-14
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-11-14
Total releases: 6 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.2
Download size: 12 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("PreciseSums")

Format

Fidler, M., NumPy Team, Python Team, Hettinger, R., Shewchuk, J., Smith, N., & Taylor, J. (2024). PreciseSums: Accurate Floating Point Sums and Products (Version 0.7) [Computer software]. https://doi.org/10.32614/CRAN.package.PreciseSums

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 PreciseSums version 0.7 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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