>  <td>some<sup>d</sup></td><td>     </td></tr>

<tr><td>imag</td>
<td>Imaginary portion of a complex vector. Result is a scalar vector which
may be used as an lvalue.</td>
<td></td>
<td>Y</td>
<td>all<sup>b</sup></td></tr>

<tr><td>isnan</td><td>Nonzero if x is NaNS (Signalling Not a Number) or NaNQ (Quiet Not A Number).  Result is integer.</td>     <td>Y</td>     <td></td>  <td>some<sup>d</sup></td><td>     </td></tr>
<tr><td>itrunc</td><td>Truncate and convert to integer.  Result is integer.</td>     <td