li>
        <li>
          <b>CH_EQI</b> is a case insensitive comparison of two characters for equality.
        </li>
        <li>
          <b>CH_TO_DIGIT</b> returns the integer value of a base 10 digit.
        </li>
        <li>
          <b>GET_UNIT</b> returns a free FORTRAN unit number.
        </li>
        <li>
          <b>I4MAT_ZERO</b> zeroes out an I4MAT.
        </li>
        <li>
          <b>I4VEC_ZERO</b> sets the entries of an I4VEC to 0.
        </li>
        <li>
          <b>ICE_WRITE