Source Code for the Tight T Program

The TT program contains code from four public domain sources:
    mysource.f contains

  1. code that I (Steve Verrill) have written. It is distributed under a GNU copyright. Please see the files copyright and COPYING for details. These files are distributed with the source code.

    othersrc.f contains

  2. RNOR which is a normal random number generator code written by Kahaner and Marsaglia. More information about RNOR can be obtained by starting at the Guide to Available Mathematical Software (GAMS) produced by the Commerce Department's National Institute of Standards and Technology (NIST). See the comments in the code for further details.

  3. code from the slatec mathematical subroutines library. This code can be obtained from netlib or from GAMS. See the comments in the code for further details.


    DCDFLIB is a public domain library of "routines for cumulative distribution functions, their inverses, and their parameters." It was produced by Barry Brown (, James Lovato, and Kathy Russell of the Department of Biomathematics, M.D. Anderson Cancer Center, The University of Texas. One way to obtain it is through statlib. To get started on statlib, send the e-mail message

    send index


    Alternatively, here is a WWW link to statlib.

For further information, please contact Steve Verrill at or 608-231-9375.
Last modified on 5/22/96.