ith a
progressively wider range of algorithms until the the given time limit
is reached or the given range of algorithms is explored, returning the
best available plan.
<a name="index-FFTW_005fNO_005fTIMELIMIT"></a>
</p>

<p>For example, specifying <code>FFTW_PATIENT</code> first plans in
<code>FFTW_ESTIMATE</code> mode, then in <code>FFTW_MEASURE</code> mode, then
finally (time permitting) in <code>FFTW_PATIENT</code>.  If
<code>FFTW_EXHAUSTIVE</code> is specified instead, the planner will further
progress