Fortran Library


The page describes the library of Fortran routines I've written (unless otherwise noted) that I'm making available to the general public. Although I've used these routines in my own research, I cannot guarantee that they will work for your purposes. More disclaimers and other fine print is below.

If you email me your email address, however, I'll let you know of any major bugs that are found in this library. Most of the routines on this page have not been developed/maintained since the first decade of the 2000s. They are published for historical and educational purposes only. I would not recommend you to use them for your own work as is.

The page is subdivided into these categories:

Files suffixed .f90 or .F90 are written in Fortran 90. Files requiring a Fortran pre-processor are denoted by .F90. Files suffixed .f77 or .f are written in Fortran 77.

Mathematical Routines

  • LAMBDA_LOG_DISP: Calculate the time-dependent exponent (lambda) and logarithmic displacement curves, as defined by Gao (1997). Routine copyright © 1993-2002 by Jianbo Gao and Johnny Lin and is released as per the license below. File required: Notices and additional documentation: A Fortran 90 wrapper main program has also been written which calls this subprogram.

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Main Program Wrappers

  • LAMBDA_LOG_DISP_WRAP: Main program wrapper which calls Fortran 90 subprogram LAMBDA_LOG_DISP and enables the creation of an executable that can call LAMBDA_LOG_DISP, with values of variables being passed in and out of stdin/stdout. File required: Pre-compiled binaries of this main program are available: Notices and additional documentation:
    • Notes regarding use of the wrapper: Last updated 27 May 2002.
    One use of such a wrapper is the generation of an executable that can then be called using the IDL SPAWN routine. See the description of IDL procedure LAMBDA_LOG_DISP for more information on such a use. A detailed description of the routine and instructions for compiling are in the "Notes" above.

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Copyright and Licensing

Unless otherwise stated, the Fortran routines described on this page or which reference this page are copyright © 2002 by Johnny Lin and constitute a library that is covered under the GNU Lesser General Public License (LGPL):

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

You can contact Johnny Lin by email or at this address.

A copy of the GNU LGPL can be found here. Please note that these disclaimers of warranty supercede any implied or explicit warranties or claims found in the text of the routine source code themselves.

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Acknowledgements: Some of the routine(s) listed on this page are based, at least in part, upon work supported by the National Science Foundation under grant number OPP-0129800. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the NSF.

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Author: Johnny Lin <email address>. This library description page is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License.