The numerical subroutines from the book "Numerical Recipes" by William Press, et al. are installed on Athena. There are approximately 200 routines, which cover a large range of subjects. The source code for the routines are available, and the book documents and explains the mathematics behind the routines.
Both C and Fortran versions are available in the "recipes" locker. The source code is in the directory /mit/recipes/src
To use the libraries from your C program, you'd type:
To use the libraries from your Fortran program, you'd type:
The layout of the recipes locker is as follows:
The src directory has 2 subdirectories, one for C and one for fortran:
src/recipes_c-ansi : The Ansi-C version
src/recipes_c-kr : The K&R C version
src/recipes_f : The fortran version
Each of these subdirectories contain the source for Numerical Recipes and the source for the demo/example programs.
- The NR sources are in
- The demo/example sources are in
Due to a conflict with libm.a, there were 2 changes made in the Numerical Recipes "C" sources:
- erf has been renamed erf_nr
- erfc has been renamed erfc_nr