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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/>.
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Package details |
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| Author | Vincent Goulet [cre, aut], Gerard Jungman [aut] (Original GSL code), Brian Gough [aut] (Original GSL code), Jeffrey A. Ryan [aut] (Package API), Robert Gentleman [aut] (Parts of the R to C interface), Ross Ihaka [aut] (Parts of the R to C interface), R Core Team [aut] (Parts of the R to C interface), R Foundation [aut] (Parts of the R to C interface) |
| Maintainer | Vincent Goulet <vincent.goulet@act.ulaval.ca> |
| License | GPL (>= 2) |
| Version | 0.1-8 |
| URL | https://gitlab.com/vigou3/expint |
| Package repository | View on CRAN |
| Installation |
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