1. You can buy the code as an immediate electronic download here. The download is delivered as a single zip file suitable for you to unzip and use on all operating systems (Windows, Linux, and Macintosh).
2. Or, you can buy the Numerical Recipes All Languages Code Download, or the similar Source Code CD-ROM (ISBN 0521706858). These products include the code along with many extras (see right). Order the immediate download here, or the CD-ROM from Amazon.com here, or from Cambridge University Press here.
3. Or, your work group, company, or university can purchase an institutional subscription. Institutional subscriptions include both Numerical Recipes Electronic (the book) and Numerical Recipes Code. Information is here.
The individual download product and the CD-ROM product include a non-expiring Numerical Recipes Personal Single-User License that allows one individual to use the code on any number of computers.
Institutional subscriptions allow unlimited use of both Numerical Recipes Electronic (the book) and Numerical Recipes Code by any number of individuals on computers within a fixed IP address range during the term of the subscription.