, 2020 1:43 PM
To: Wang, Zhu ; Ben Bolker ;
r-package-devel@r-project.org
Subject: RE: [R-pkg-devel] incomplete gamma function Fortran subroutine
As others have said, built-in function pgamma is a (normalized) version of the
incomplete gamma function! John
-Original Message-
From: R-package
Thanks Steven.
Zhu
From: Steven Scott
Sent: Tuesday, July 21, 2020 1:30 PM
To: Wang, Zhu
Cc: Ben Bolker ; r-package-devel@r-project.org
Subject: Re: [R-pkg-devel] incomplete gamma function Fortran subroutine
You can often find this kind of code on netlib.org<http://netlib.org>. Just
i
Sent: Tuesday, July 21, 2020 12:54 PM
To: r-package-devel@r-project.org
Subject: Re: [R-pkg-devel] incomplete gamma function Fortran subroutine
Is there a reason not to use pgamma(), possibly adjusted by a
(de-)normalizing constant? (See detailed notes in ?pgamma)
On 7/21/20 1:44 PM, Wang
Original Message-
> From: R-package-devel On Behalf
> Of Ben Bolker
> Sent: Tuesday, July 21, 2020 12:54 PM
> To: r-package-devel@r-project.org
> Subject: Re: [R-pkg-devel] incomplete gamma function Fortran subroutine
>
> Is there a reason not to use pgamm
] incomplete gamma function Fortran subroutine
Is there a reason not to use pgamma(), possibly adjusted by a
(de-)normalizing constant? (See detailed notes in ?pgamma)
On 7/21/20 1:44 PM, Wang, Zhu wrote:
> Hello,
>
> In an R function within a package, I would like to call a Fortran s
BTW, if you search for "incomplete gamma function" on Rseek.org, you will
find whole packages for this.
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Tue,
Why? -- see ?dgamma
See also the section on including fortran code in "Writing R Extensions,"
which should be your first port of call for such questions.
If neither of these is what you need, it may be helpful if you explain why
not.
Bert Gunter
"The trouble with having an open mind is that
Is there a reason not to use pgamma(), possibly adjusted by a
(de-)normalizing constant? (See detailed notes in ?pgamma)
On 7/21/20 1:44 PM, Wang, Zhu wrote:
Hello,
In an R function within a package, I would like to call a Fortran subroutine to
compute lower gamma function. Any advice
Hello,
In an R function within a package, I would like to call a Fortran subroutine to
compute lower gamma function. Any advice will be appreciated.
Thanks!
Zhu Wang
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