
From:  Jason Stover 
Subject:  Re: anyone want to implement these transformation functions? 
Date:  Mon, 7 Mar 2005 13:48:35 +0000 
Useragent:  Mutt/1.4.2.1i 
I'd be happy to implement these, but I don't know when I can get to them. I have written the guts of some of these functions, and those guts are attached, if anyone else wants to put them in PSPP before I can. I wrote these functions for GSL, though the maintainer hasn't put them in. (I don't know if he will.) Gutting them wouldn't be difficult. I ran some accuracy tests on them, which I can send, if you like. Attached is code for the binomial cdf, the geometric cdf, the hypergeometric cdf, the Poisson cdf. Some of these require the beta cdf, whose code is also attached. Jason On Sun, Mar 06, 2005 at 10:30:54PM 0800, Ben Pfaff wrote: > We don't have implementations of the following functions for use > in PSPP expressions: > > function NCDF.CHISQ (x >= 0, df > 0, c) = unimplemented; > function NPDF.CHISQ (x >= 0, df > 0, c) = unimplemented; > function NCDF.F (x >= 0, df1 > 0, df2 > 0, lambda >= 0) = unimplemented; > function NPDF.F (x >= 0, df1 > 0, df2 > 0, lmabda >= 0) = unimplemented; > function SIG.F (x >= 0, df1 > 0, df2 > 0) = unimplemented; > function CDF.HALFNRM (x, a, b > 0) = unimplemented; > function IDF.HALFNRM (P > 0 && P < 1, a, b > 0) = unimplemented; > function PDF.HALFNRM (x, a, b > 0) = unimplemented; > no_opt function RV.HALFNRM (a, b > 0) = unimplemented; > function CDF.IGAUSS (x > 0, a > 0, b > 0) = unimplemented; > function IDF.IGAUSS (P >= 0 && P < 1, a > 0, b > 0) = unimplemented; > function PDF.IGAUSS (x > 0, a > 0, b > 0) = unimplemented; > no_opt function RV.IGAUSS (a > 0, b > 0) = unimplemented; > function CDF.SMOD (x > 0, a >= 1, b >= 1) = unimplemented; > function IDF.SMOD (P >= 0 && P < 1, a >= 1, b >= 1) = unimplemented; > function CDF.SRANGE (x > 0, a >= 1, b >= 1) = unimplemented; > function IDF.SRANGE (P >= 0 && P < 1, a >= 1, b >= 1) = unimplemented; > function NCDF.T (x, df > 0, nc) = unimplemented; > function NPDF.T (x, df > 0, nc) = unimplemented; > function CDF.BINOM (k, n > 0 && n == floor (n), p >= 0 && p <= 1) > = unimplemented; > function CDF.GEOM (k >= 1 && k == floor (k), p >= 0 && p <= 1) = > unimplemented; > function CDF.HYPER (k >= 0 && k == floor (k) && k <= c, > a > 0 && a == floor (a), > b > 0 && b == floor (b) && b <= a, > c > 0 && c == floor (c) && c <= a) > = unimplemented; > function CDF.NEGBIN (k >= 1, n == floor (n), p > 0 && p <= 1) = > unimplemented; > function CDF.POISSON (k >= 0 && k == floor (k), mu > 0) = unimplemented; > > (The above is in the syntax used for operations.def, which is > terse but expressive.) > > Anyone want to implement any of them? As far as I can tell, > these functions are not part of GSL. >  > "Platonically Evil Monkey has been symbolically representing the darkest > fears of humanity since the dawn of literature and religion, and I think > I speak for everyone when I give it a sidelong glance of uneasy recognition > this evening." Scrymarch > > > _______________________________________________ > psppdev mailing list > address@hidden > http://lists.gnu.org/mailman/listinfo/psppdev  address@hidden SDF Public Access UNIX System  http://sdf.lonestar.org
hypergeometric.c
Description: Text document
negbinom.c
Description: Text document
binomial.c
Description: Text document
poisson.c
Description: Text document
geometric.c
Description: Text document
betadistinv.c
Description: Text document
[Prev in Thread]  Current Thread  [Next in Thread] 