1 <title>hat file format
</title>
3 <h1>hat file format
</h1>
5 Files with the hat file extension contain
6 a fourier transform of a spread function used in the PPPM algorithm.
7 Eigenvectors are produced by
<a href=
"mk_ghat.html">mk_ghat
</a>
8 and read by
<a href=
"mdrun.html">mdrun
</a>.