ng.
    </p>

    <p>
      <a href = "../../f77_src/test_interp_2d/test_interp_2d.html">
      TEST_INTERP_2D</a>,
      a FORTRAN77 library which
      defines test problems for interpolation of regular or scattered data z(x,y),
      depending on a 2D argument.
    </p>

    <p>
      <a href = "../../f77_src/triangulation/triangulation.html">
      TRIANGULATION</a>,
      a FORTRAN77 library which
      performs various operations on order 3 (linear) or order 6 (quadratic) triangulations.
    </p>

   