   </tr>
<tr><td><tt>real*8&nbsp;math_dint2d(func,xmin,xmax,nx,ymin,ymax,ny)</tt>
    <br><tt>complex*16&nbsp;math_cint2d(func,xmin,xmax,nx,ymin,ymax,ny)</tt></td>
    <td>Integration of 2D real*8 and complex*16 functions.</td>
    </tr>
</table>

<table>
<tr><td><tt>real*8&nbsp;math_dint_gk(func, xmin, xmax, nx, aerr)</tt></td>
    <td>Integrate real*8 function using Gauss-7pk+Kronrod-13pt.</td>
    </tr>
<tr><td><tt>real*8&nbsp;math_dint_gka(func,xmin, xmax, aerr_lim, rerr_lim)</tt></td>
    <td>Adaptive 