Rcpp

The 'Rcpp' package provides R functions as well as C++ classes which offer a seamless integration of R and C++. Many R data types and objects can be mapped back and forth to C++ equivalents which facilitates both writing of new code as well as easier integration of third-party libraries. Documentation about 'Rcpp' is provided by several vignettes included in this package, via the 'Rcpp Gallery' site at <https://gallery.rcpp.org>, the paper by Eddelbuettel and Francois (2011, <doi:10.18637/jss.v040.i08>), the book by Eddelbuettel (2013, <doi:10.1007/978-1-4614-6868-4>) and the paper by Eddelbuettel and Balamuta (2018, <doi:10.1080/00031305.2017.1375990>); see 'citation("Rcpp")' for details.

Releases

109

Needs compilation

Yes

Needs R

>= 3.5.0

Date

2026-07-01

RoxygenNote

6.1.1

• High-Performance and Parallel Computing with R
• Numerical Mathematics
• Package Development and Maintenance

• C and C++ library bindings, core

whether package can be installed, Error on 1 platform

Installation failed.
See 'd:/Rcompile/CRANpkg/local/4.7/Rcpp.Rcheck/00install.out' for details.

Rd contents, Note on 2 platforms

Rd files without \usage:
  ‘dependsAttribute.Rd’ ‘exportAttribute.Rd’ ‘interfacesAttribute.Rd’
  ‘pluginsAttribute.Rd’
\arguments should not be documented without \usage.

foreign function calls, Note on 2 platforms

Registration problem:
  symbol ‘symbol’ in the local frame:
   .Call(symbol)
See chapter ‘System and foreign language interfaces’ in the ‘Writing R
Extensions’ manual.

Since March 2026

• methods
• utils

Installing it adds

0 packages, 0 KB of source

Of those, need compilation

0

• inline
• pkgKitten
• rbenchmark
• tinytest

Lines by kind (11,284)

Lines by language

Languages are counted from file extensions.

Files

702

R functions

120

Compiled functions

313

Object systems

S3: 6 methods, S4: 5 classes, S4: 5 generics, S4: 15 methods, Reference classes: 7 classes

Median

2

Mean

3.43

Highest

37

Median lines per function

8

R functions

120

Calls

86

Unconnected

37

Groups

8

Lines counted

828

Lines the tests ran

812

Tests passed

Yes

Measured with

covr 3.6.5 on R 4.6.1

Has tests

Yes

Test frameworks

tinytest

Test cases

1,684

Lines of tests

52

Test lines per line of code

0.02

• Rcpp-attributes
• Rcpp-extending
• Rcpp-FAQ
• Rcpp-introduction
• Rcpp-JSS-2011
• Rcpp-libraries
• Rcpp-modules
• Rcpp-package
• Rcpp-quickref
• Rcpp-sugar

README

Yes, 945 words

Release notes file

Yes

Help pages

32

Lines of documentation

1,738

• a small portion of the code is based on code written during 2005
• based on code written during 2005
• David Reiss
• Dominick Samperi
• Douglas Bates
• Inaki Ucar
• Simon Urbanek

Commits

5,200

Open pull requests

2

Tagged releases

48

Latest tagged release

1.1.2, 11 Jul 2026

In development

Default branch at 1.1.2.7, ahead of CRAN 1.1.2 (checked 2026-10-25)

Issues closed in

2 days (median)

Pull requests closed in

1 day (median)

Pull requests merged

91%

Created

31 Oct 2013

Licence file reads as

GPL-2.0

Method, repository practices

Across RcppCore

• Changes in Rcpp API:
• Use of execinfo.h is again conditional to avoid build complexity (Dirk in 1445 addressing 1442)
• An internal state component for Datetime is now int (Dirk in 1448 and 1449 fixing 1447)
• Three new (in R 4.6.0) attribute accessors are used conditionally (Dirk in 1450 closing 1432)
• An UBSAN error in the Sugar-based NA comparison has been corrected (Iñaki in 1453 fixing 1452)
• Treatment of Inf outside of integer range in Sugar function has been corrected (Iñaki in 1458 fixing 1455)
• Integer overflow protection has been added for sugar functions (Iñaki in 1457 fixing 1454)
• The parent environment is now accessed via R_ParentEnv (Dirk in 1460 fixing 1459)
• Change to returning dataptr again for better handling of empty vectors (Iñaki in 1462 fixing 1461)
• Undefined behavior errors in use of ListOf proxies have been addressed (Iñaki in 1464 fixing 1463)
• Under newer R version, R_UnboundValue is no longer used (Iñaki in 1466 fixing 1465)
• New R API access point R_getRegisteredNamespace() is used with current R versions (Dirk in 1469 fixing 1468)
• The Nullable::as() exporter now uses an explicit cast to the templated type (Dirk in 1471 fixing 1470)
• A memory leak in the variadic Rcpp::warning() template has been fixed (Kevin in 1475 fixing 1474)
• The Nullable::operatorT() has been added as a 'opt-out' (Dirk in 1477 with coordination in 1472)
• Add templated integer-index overload for operator[] on small systems such as WASM (Jeroen Ooms in 1482)
• The attribute accessors in AttributeProxyPolicy no longer rely on get__() (Kevin in 1484 fixing 1483)
• Changes in Rcpp Documentation:
• Reference in the bibliography used by the package vignettes have been updated.
• Changes in Rcpp Deployment:
• Excute permissions are set consistently on scripts with shebangs (Mattias Ellert in 1467)
• R 4.5.* has been added to the CI matrix (Dirk in 1476)
• Three nag messages issued when obsolete build flag accessors are used now show Rcpp::: (Dirk in 1480 fixing 1456)
• Reference GitHub Actions have been updated to their current versions (Dirk in 1481)
• Non-release Changes:
• A non-release hotfix 1.1.1-1 used by CRAN accommodates breaking changes to the API in R 4.6.0. It would be nice to have the same level of release management in R itself that CRAN expects from us.