Numerical Recipes in Common Lisp

(Ken Olum Variant)

The code in this directory is a slightly rewritten version of the Lisp Numerical Recipes code translated by Kevin Broughan from the first edition of Numerical Recipes in Fortran. It is based on a slightly earlier version of the Broughan code than that which appears elsewhere on this CDROM. Because the needs of Lisp users vary widely, it was felt that a slightly different customization of the original Broughan files might be additionally useful to some users.

The files in this directory are as follows:

contents.txt -- A list of which routines are implemented and which file they are in.
header.l -- A few utility functions that are used in many different places in the code.
nr01.l | nr02.l | nr03.l | nr04.l | nr05.l | nr06.l | nr07.l | nr08.l | nr09.l | nr10.l | nr11.l | nr12.l | nr13.l | nr14.l | nr15.l | nr16.l | nr17.l -- The Numerical Recipes code, organized by chapters as in the first edition of Numerical Recipes in Fortran.

I have made the following changes for use in Common Lisp instead of the Senac system:

Some utility functions are defined in the header file.
Everything is in Common Lisp without implementation extensions or dependencies.
User-defined functions accept and return arrays, rather than converting things to and from list structures.

Only some of the routines in this code have been tested. Thus it is quite possible that I have introduced bugs in my modifications of some of the routines. If you suspect this you can compare these routines with the ones in the Broughan/Senac directory. The routines most likely to be affected are those in the FFT chapter which deal with converting between real and complex arrays, those that call user-supplied functions, and the function MEDFIT.

The function MEDFIT does not work properly. I believe the mistake was in the original code before translation. You might want to make a new translation of the rewritten version of ROFUNC that appears in the second edition of the books.

Feel free to contact me at the email address below if you have questions about this code, if you discover bugs, or if you would like to make further improvements.

Ken Olum
kdo@mit.edu or kdo@ctp.mit.edu
April 30, 1996