1 Introduction | 2 Exponential integral | 3 Incomplete gamma function | 4 R interfaces | 5 Accessing the C routines | 6 Implementation details | 7 Alternative packages | 8 Examples | 9 Acknowledgments | A Additional details on the computation of the incomplete gamma function
Package: expint 0.2-1
expint: Exponential Integral and Incomplete Gamma Function
The exponential integrals E_1(x), E_2(x), E_n(x) and Ei(x), and the incomplete gamma function G(a, x) defined for negative values of its first argument. The package also gives easy access to the underlying C routines through an API; see the package vignette for details. A test package included in sub-directory example_API provides an implementation. C routines derived from the GNU Scientific Library <https://www.gnu.org/software/gsl/>.
Authors:
expint_0.2-1.tar.gz
expint_0.2-1.zip(r-4.7)expint_0.2-1.zip(r-4.6)expint_0.2-1.zip(r-4.5)
expint_0.2-1.tgz(r-4.6-x86_64)expint_0.2-1.tgz(r-4.6-arm64)expint_0.2-1.tgz(r-4.5-x86_64)expint_0.2-1.tgz(r-4.5-arm64)
expint_0.2-1.tar.gz(r-4.7-arm64)expint_0.2-1.tar.gz(r-4.7-x86_64)expint_0.2-1.tar.gz(r-4.6-arm64)expint_0.2-1.tar.gz(r-4.6-x86_64)
expint_0.2-1.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
expint/json (API)
| # Install 'expint' in R: |
| install.packages('expint', repos = c('https://vigou3.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://gitlab.com/vigou3/expint
Last updated from:c73bcce738. Checks:11 WARNING, 1 ERROR, 1 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel-arm64 | WARNING | 145 | ||
| linux-devel-x86_64 | WARNING | 101 | ||
| source / vignettes | ERROR | 187 | ||
| linux-release-arm64 | WARNING | 111 | ||
| linux-release-x86_64 | WARNING | 105 | ||
| macos-release-arm64 | WARNING | 77 | ||
| macos-release-x86_64 | WARNING | 201 | ||
| macos-oldrel-arm64 | WARNING | 89 | ||
| macos-oldrel-x86_64 | WARNING | 183 | ||
| windows-devel | WARNING | 109 | ||
| windows-release | WARNING | 75 | ||
| windows-oldrel | WARNING | 64 | ||
| wasm-release | OK | 90 |
Exports:expintexpint_E1expint_E2expint_Eiexpint_Engammainc
Dependencies:
Vignettes and/or manual for this package failed to build, some documents may be unavailable. Please inspect thebuild logs for more information.
expint user manual
Last update: 2026-01-27
Started: 2016-12-20
Readme and manuals
Help Manual
| Help page | Topics |
|---|---|
| Exponential Integral and Incomplete Gamma Function | expint-package |
| Exponential Integral | expint expint_E1 expint_E2 expint_Ei expint_En ExponentialIntegral |
| Incomplete Gamma Function | gammainc gamma_inc IncompleteGammaFunction |
