href="#64bitk7" rel=subdocument>Q2.12. --enable-k7 does not work on x86-64</a>
</ul><hr>

<h2><A name="systems">
Question 2.1.  Which systems does FFTW run
on?
</A></h2>

FFTW is written in ANSI C, and should work on any system with a decent
C compiler.  (See also <A href="#runOnWindows">Q2.2 `Does FFTW run on Windows?'</A>, <A href="#compilerCrashes">Q2.3 `My compiler has trouble with FFTW.'</A>.) FFTW can also take advantage of certain hardware-specific features,
such as cycle counters and SIMD instructio