### Approx for F, t tables -- Report

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DCDFLIB
Library of Routines for Cumulative Distribution
Functions, Inverses, and Other Parameters
C and Fortran
Barry W. Brown
James Lovato
Kathy Russell
LATEST VERSION: 1.0
CAPABILITIES
DCDFLIB (Double precision Cumulative Distribution Function LIBrary) is
a collection of routines that calculate cumulative distribution
functions, inverses, and parameters for common statistical
distributions. DCDFLIB uses published algorithms where available, and
literature citations are included in the documentation.
Values associated with a statistical distribution include X, the upper
limit of integration of the density, P, the cumulative distribution
function evaluated at X, and auxillary parameters such as degrees of
freedom. Given all but one such value, a routine in cdflib will
calculate the one value. (CAVEAT: For the central and noncentral F,
the cdf is sometimes not monotone in the degrees of freedom. For
these parameters, there can be two answers. DCDFLIB finds an
arbitrary one of the two in this case.
Routines are provided for the following distributions.
(1) Beta
(2) Binomial
(3) Chi-square
(4) Noncentral Chi-square
(5) F
(6) Noncentral F
(7) Gamma
(8) Negative Binomial
(9) Normal
(10) Poisson
(11) Student's t
WHERE TO GET IT
Software written by members of the section is freely available to
anyone. Readers with Internet access and a browser might note the
following web site addresses:
University of Texas M. D. Anderson Cancer Center Home Page:
http://utmdacc.mdacc.tmc.edu/
Department of Biomathematics Home Page:
http://odin.mdacc.tmc.edu/
Available Software:
http://odin.mdacc.tmc.edu/anonftp/
Our code can also be obtained by anonymous ftp to odin.mdacc.tmc.edu.
The index is on file ./pub/index. The index can be viewed by issuing
the following Unix command:
finger software@odin.mdacc.tmc.edu.
HOW TO GET IT
The source is in directory ./pub/source. Relevent files are:
dcdflib.c-1.0-tar.Z: Source in Ansi C plus documentation.
dcdflib.f-1.0-tar.Z: Source in Fortran 77 plus documentation.
dcdflib.kr.c-1.0-tar.Z: Source in K&R C (old C) plus documentation.
MSDOS versions are self-extracting files packaged with a licensed
copy of PKZIP.
./msdos/dcdc10.exe: Source in ANSI C
./msdos/dcdf10.exe: Source in F77
Barry W. Brown
Department of Biomathematics,
Box 237
University of Texas M. D.
Anderson Hospital
1515 Holcombe Blvd
Houston, TX 77030
bwb@odin.mdacc.tmc.edu
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