struct</tt>/<tt>union</tt> types; reading external variables or
constant values; retrieving return values from C&nbsp;calls:
</p>
<table class="convtable">
<tr class="convhead">
<td class="convin">Input</td>
<td class="convop">Conversion</td>
<td class="convout">Output</td>
</tr>
<tr class="odd separate">
<td class="convin"><tt>int8_t</tt>, <tt>int16_t</tt></td><td class="convop">&rarr;<sup>sign-ext</sup> <tt>int32_t</tt> &rarr; <tt>double</tt></td><td class="convout">number</td></tr>
<tr class="even">
<td 