 familiar with wisdom, as described in <a href="Words-of-Wisdom_002dSaving-Plans.html#Words-of-Wisdom_002dSaving-Plans">Words of Wisdom-Saving Plans</a>.

   <p><a name="index-portability-352"></a>The basic problem is that is difficult to (portably) pass files and
strings between Fortran and C, so we cannot provide a direct Fortran
equivalent to the <code>fftw_export_wisdom_to_file</code>, etcetera,
functions.  Fortran interfaces <em>are</em> provided for the functions
that do not take file/string arguments