If you have the source code to Numerical Recipes in C and/or Fortran,
then you should place the following files in this directory:

C: four1.c fourn.c realft.c
Fortran: four1.f fourn.f realft.f rlft3.f

Then, on a UNIX machine, you should run the 'configure' program
followed by 'make'.  The files will be detected and the necessary
changes will be made automatically to incorporate them into the
benchmark (via the diff-produced patch files in the c_source and
f_source directories).
