>
<p>Otherwise, the C-Fortran interface relationship is much the same as it
was before (e.g. return values become initial parameters, and
multi-dimensional arrays are in column-major order).  Unlike FFTW 2, we
do provide some support for wisdom import/export in Fortran
(see <a href="Wisdom-of-Fortran_003f.html#Wisdom-of-Fortran_003f">Wisdom of Fortran?</a>).
</p>
<a name="Threads"></a>
<h3 class="heading">Threads</h3>

<p>Like FFTW 2, only the execution routines are thread-safe.  All planner
routines, etcet