FDTD++ can be obtained at no charge here.
Note that the above is the only official distribution channel. If you see FDTD++ being distributed elsewhere, please send an email to firstname.lastname@example.org.
FDTD++ is distributed as a .tgz file, fdtdxx.tgz. Prior to compiling, it must be unpacked.
On a Unix-like system, fdtdxx.tgz can be unpacked in a terminal by typing:
tar -zxvf fdtdxx.tgz
On Windows, a file archiver can be used to unpack fdtdxx.tgz. That recommended by FDTD++ is the open source software 7-Zip.
Notes and references
- ↑ There is an unconfirmed issue with unpacking fdtdxx.tgz on Windows. See the list of known issues.