
      approximates a set of data using a piecewise linear function.
    </p>

    <p>
      <a href = "../../m_src/r8lib/r8lib.html">
      R8LIB</a>,
      a MATLAB library which
      contains many utility routines using double precision real (R8) arithmetic.
    </p>

    <p>
      <a href = "../../m_src/spline/spline.html">
      SPLINE</a>,
      a MATLAB library which
      constructs and evaluates spline interpolants and approximants.
    </p>

    <p>
      <a href = "../../m_src/test_approx/test_a