| incomplete gamma fcn [message #2960] |
Thu, 20 October 1994 08:42  |
mfishler
Messages: 5
Registered: October 1994
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Junior Member |
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Hi,
Does anyone have (or know of a location to find) the code for
evaluation of the incomplete gamma function? I'm using pv-wave,
but I'm not too picky (mainly since I don't think it should matter
much in this case).
Thanks a bunch,
==Matthew
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| (_|_ | M a t t h e w G. F i s h l e r | |
| ___ | The Johns Hopkins School of Medicine | "It is a miracle |
| (_) ) | 720 Rutland Ave --- 701 Traylor Bldg | that curiosity |
| _ | Baltimore, MD 21205 | survives formal |
| (_ | tel:(410)955-0077 fax:(410)955-0549 | education." |
| (_ | e-mail: mfishler@bme.jhu.edu | --Albert Einstein |
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| Re: incomplete gamma fcn [message #3043 is a reply to message #2960] |
Mon, 24 October 1994 07:56  |
landers
Messages: 45
Registered: May 1993
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Member |
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PV-WAVE:Advantage has a complete gamma function - GAMMAI(a,x).
I have not used this, but it's there - it would be a call to the IMSL
function GAMI.
;Dave
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| Re: incomplete gamma fcn [message #3048 is a reply to message #2960] |
Thu, 20 October 1994 16:04 |
Jackel
Messages: 30
Registered: April 1993
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Member |
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In article <38635u$76u@jhunix1.hcf.jhu.edu> mfishler@bme.jhu.edu (Matthew Fishler) writes:
> From: mfishler@bme.jhu.edu (Matthew Fishler)
> Subject: incomplete gamma fcn
> Date: 20 Oct 1994 15:42:54 GMT
> Hi,
> Does anyone have (or know of a location to find) the code for
> evaluation of the incomplete gamma function? I'm using pv-wave,
> but I'm not too picky (mainly since I don't think it should matter
> much in this case).
> Thanks a bunch,
> ==Matthew
Here's some info which appeared on the sci.math.num-analysis newsgroup
a couple weeks back:
------------------------------------------------------------ -------------------
> From: vsnyder@math.jpl.nasa.gov (Van Snyder)
> Please tell me if you know of an algorithm for computing the incomplete
> gamma function(s) gamma(a,ix) or Gamma(a,ix), or, equivalently, the
> Boehmer integrals C(a,x) and S(a,x), for real a and x.
Try complex Incomplete Gamma Function by Eric Kostlan and myself.
Anonymous ftp:
<ul><li><a href="ftp://ringer.cs.utsa.edu/pub/gokhman/code/cdig.f.gz"> code</a>
<li><a href="ftp://ringer.cs.utsa.edu/pub/gokhman/papers/igf.ps.gz"> paper</a>
</ul>
Dmitry Gokhman -> gokhman@ringer.cs.utsa.edu
<a href="ftp://ringer.cs.utsa.edu/pub/gokhman/html/README.html">click here</a>
Brahms Gang/Math/UT San Antonio - fiat bux -
------------------------------------------------------------ -------------------
I got the paper, but haven't yet coded it into IDL. Doesn't look too bad,
but it will be fairly loopy. If you code it up, please post it.
Brian Jackel
University of Western Ontario
jackel@canlon.physics.uwo.ca
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