R help - Jul 2004 - Code density functions

Hello

I would like to see the algorithm that R uses to generate density functions 
for several distributions (i.e. Normal,Weibull, etc).  I tried:
>dnorm
function (x, mean = 0, sd = 1, log = FALSE)
.Internal(dnorm(x, mean, sd, log))
<environment: namespace:stats>

How can I see the code used for densities?

Thanks!

Dear <insert your name here>:

You need to look at the C-level source codes, in R-1.9.1/src/nmath/d*.c.

Andy
> From: F Z
> 
> Hello
> 
> I would like to see the algorithm that R uses to generate 
> density functions 
> for several distributions (i.e. Normal,Weibull, etc).  I tried:
> 
> >dnorm
> function (x, mean = 0, sd = 1, log = FALSE)
> .Internal(dnorm(x, mean, sd, log))
> <environment: namespace:stats>
> 
> How can I see the code used for densities?
> 
> Thanks!

Dear Andy

Thanks for your reply.  I don't seem to find the file that you suggested. I 
tried:
>file.show('C:/Program Files/R/rw1091/src/nmath/dnorm.c.')
NULL
Warning message:
file.show(): file C:/Program Files/R/rw1091/src/nmath/dnorm.c. does not 
exist

Then I looked at the directory and tried a file with similar name:
>file.show('C:/Program Files/R/rw1091/src/include/Rmath.h')
But this file does not show the actual code used to calculate the densities, 
only the declarations of the procedures.

What am I doing wrong?

Thanks again!

Francisco Zagmutt :)

>From: "Liaw, Andy" <andy_liaw at merck.com>
>To: "'F Z'" <gerifalte28 at hotmail.com>,R-help at
stat.math.ethz.ch
>Subject: RE: [R] Code density functions
>Date: Tue, 6 Jul 2004 18:35:24 -0400
>
>Dear <insert your name here>:
>
>You need to look at the C-level source codes, in R-1.9.1/src/nmath/d*.c.
>
>Andy
>
> > From: F Z
> >
> > Hello
> >
> > I would like to see the algorithm that R uses to generate
> > density functions
> > for several distributions (i.e. Normal,Weibull, etc).  I tried:
> >
> > >dnorm
> > function (x, mean = 0, sd = 1, log = FALSE)
> > .Internal(dnorm(x, mean, sd, log))
> > <environment: namespace:stats>
> >
> > How can I see the code used for densities?
> >
> > Thanks!
>
>
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>Jersey, USA 08889), and/or its affiliates (which may be known outside the 
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as
>Banyu) that may be confidential, proprietary copyrighted and/or legally 
>privileged. It is intended solely for the use of the individual or entity 
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Thanks to Andy Liaw, James Holtman and Uwe Ligges;  I downloaded and looked 
at the source and found what I need!!

Francisco


>From: Uwe Ligges <ligges at statistik.uni-dortmund.de>
>To: F Z <gerifalte28 at hotmail.com>
>CC: andy_liaw at merck.com, R-help at stat.math.ethz.ch
>Subject: Re: [R] Code density functions
>Date: Wed, 07 Jul 2004 07:51:35 +0200
>
>F Z wrote:
>>Dear Andy
>>
>>Thanks for your reply.  I don't seem to find the file that you
suggested.
>>I tried:
>>
>>>file.show('C:/Program Files/R/rw1091/src/nmath/dnorm.c.')
>
>You have installed a binary distribution.
>You need to get the source tarball (directly accessible via the main CRAN 
>page) that includes the file.
>
>Uwe Ligges
>
>
>
>>NULL
>>Warning message:
>>file.show(): file C:/Program Files/R/rw1091/src/nmath/dnorm.c. does not 
>>exist
>>
>>Then I looked at the directory and tried a file with similar name:
>>
>>>file.show('C:/Program Files/R/rw1091/src/include/Rmath.h')
>>
>>
>>But this file does not show the actual code used to calculate the 
>>densities, only the declarations of the procedures.
>>
>>What am I doing wrong?
>>
>>Thanks again!
>>
>>Francisco Zagmutt :)
>>
>>
>>>From: "Liaw, Andy" <andy_liaw at merck.com>
>>>To: "'F Z'" <gerifalte28 at
hotmail.com>,R-help at stat.math.ethz.ch
>>>Subject: RE: [R] Code density functions
>>>Date: Tue, 6 Jul 2004 18:35:24 -0400
>>>
>>>Dear <insert your name here>:
>>>
>>>You need to look at the C-level source codes, in
R-1.9.1/src/nmath/d*.c.
>>>
>>>Andy
>>>
>>> > From: F Z
>>> >
>>> > Hello
>>> >
>>> > I would like to see the algorithm that R uses to generate
>>> > density functions
>>> > for several distributions (i.e. Normal,Weibull, etc).  I
tried:
>>> >
>>> > >dnorm
>>> > function (x, mean = 0, sd = 1, log = FALSE)
>>> > .Internal(dnorm(x, mean, sd, log))
>>> > <environment: namespace:stats>
>>> >
>>> > How can I see the code used for densities?
>>> >
>>> > Thanks!
>>>
>>>
>>>------------------------------------------------------------------------------
>>>
>>>Notice:  This e-mail message, together with any attachments,
contains
>>>information of Merck & Co., Inc. (One Merck Drive, Whitehouse
Station,
>>>New Jersey, USA 08889), and/or its affiliates (which may be known
outside
>>>the United States as Merck Frosst, Merck Sharp & Dohme or MSD
and in
>>>Japan, as Banyu) that may be confidential, proprietary copyrighted
and/or
>>>legally privileged. It is intended solely for the use of the
individual
>>>or entity named on this message.  If you are not the intended
recipient,
>>>and have received this message in error, please notify us
immediately by
>>>reply e-mail and then delete it from your system.
>>>------------------------------------------------------------------------------
>>>
>>
>>
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>