nleqslv

3.3.7

Solve Systems of Nonlinear Equations

80packages depend

627.6Kdownloads / year

93.1%test coverage

13/13checks pass

Overview

About

Maintained by Rob CarnellFirst published 2009-02-0758 releasesCRAN page ↗GitHub ↗

Solve a system of nonlinear equations using a Broyden or a Newton method with a choice of global strategies such as line search and trust region. There are options for using a numerical or user supplied Jacobian, for specifying a banded numerical Jacobian and for allowing a singular or ill-conditioned Jacobian.

Install

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

install.packages("nleqslv", 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("bertcarnell/nleqslv")

Development version from bertcarnell/nleqslv. 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-nleqslv

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-nleqslv

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-nleqslv

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.6 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 2.85

93.1%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 33%

Downloads

627.6K

CRAN downloads in the past year

Rank #438 · ~1.7K/day · ~52.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

68.8K30 days

201.9K90 days

627.6K1 year

Compare downloads with other packages →

Also on12.9K r2u263 autocran11.2K conda_forge239 bioconda168 c2d4u

Repository

GitHub ↗ bertcarnell/nleqslv

0Stars

0Forks

1Open issues

0Open PRs

1Releases

125Commits

2Contributors

equation-solvernon-linear-equationr-package

License GPL-2.0 · 125 commits · Last activity 2026-04-13

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/bertcarnell/nleqslv on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

80direct

97indirect

and 32 more packages.

Code & Tests

Code Composition

Fortran 4,329 (42%)R 4,046 (40%)Rd 939 (9%)C 879 (9%)

Code characteristics

Object systems

S31

Cyclomatic complexity: 10.5 median / 14 max
Test cases: 59 / 2.85 per code line

Test coverage

Line coverage

93%

Expression

93.1%

Tests / Examples

93.1% / 73% ex

Functions

50 3 exported

Complexity

9.5 avg / 14 max

Call network

50 nodes / 47 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

50 functions

Function	Cyclo	Coverage
searchZeros exp	14	89%
testnslv exp	11	91%
nleqslv exp	10	100%
print.test.nleqslv	3	100%

People & History

People (2)

Maintainer (1)

Rob Carnell

Author, Maintainer · added in 3.3.6

Authors (2)

Rob Carnell

Author, Maintainer · added in 3.3.6

Berend Hasselman

Author

Package Timeline

58 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
3.3.7Latest
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R 4.5.0 released · 2025-04-11
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R 4.4.0 released · 2024-04-24
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R 4.3.0 released · 2023-04-21
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R 4.2.0 released · 2022-04-22
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R 4.1.0 released · 2021-05-18
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R 4.0.0 released · 2020-04-24
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R 3.6.0 released · 2019-04-26
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R 3.5.0 released · 2018-04-23
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R 2.14.0 released · 2011-10-31
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R 2.11.0 released · 2010-04-22
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R 2.10.0 released · 2009-10-26
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R 2.9.0 released · 2009-04-17
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1.0
2009-02-07
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R 2.8.0 released · 2008-10-20

Package metadata

First published: 2009-02-07
Total releases: 58 / 17 yrs
License: GPL (>= 2) OSI
Download size: 76 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Numerical Mathematics

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