 (x(i),y(i)).
    </p>

    <p>
      <b>LAGRANGE_APPROX_1D</b> needs access to the R8LIB library.
      The test code also needs access to the TEST_INTERP_1D library. 
    </p>

    <h3 align = "center">
      Licensing:
    </h3>

    <p>
      The computer code and data files described and made available on this web page
      are distributed under
      <a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
    </p>

    <h3 align = "center">
      Languages:
    </h3>

    <p>
      <b>LAGRANGE_A