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<h2>
<a name="1206438"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">interrupt_clear_number</font>
</h2><hr>
<p>
<a name="1206439"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Clear a pending interrupt number</font>
</p>
<h3>
<a name="1206440"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1246417"> </a><font size=2 face=Courier><strong>#include <interrup.h><br></strong></font>
<a name="1246418"> </a><font size=2 face=Courier><strong>int interrupt_clear_number( int <font size=2 face=Courier><strong><em>Number </em></strong></font>)<br></strong></font>
<h3>
<a name="1246424"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
</h3>
<p>
<a name="1246421"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>int </strong></font><font size=2 face=Courier><strong><em>Number</em></strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1246423"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Interrupt number</font>
</dl>
</dl></dl>
<h3>
<a name="1206446"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
</h3>
<p>
<a name="1206447"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Returns <font size=2 face=Courier><strong>0</strong></font> for success, <font size=2 face=Courier><strong>-1</strong></font> if an error occurs.</font>
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<h3>
<a name="1206448"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>
<p>
<a name="1206449"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Returns <font size=2 face=Courier><strong>-1</strong></font> if the interrupt number is illegal.</font>
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<h3>
<a name="1206450"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1206451"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This function clears the specified pending interrupt number. If this is the only interrupt number which is pending and that is attached to the interrupt level, then the pending interrupt level is cleared as well.</font>
</p>
<p>
<a name="1206452"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><em>Note: On an ILC-1 type interrupt level controller, <font size=2 face=Courier><strong>interrupt_clear_number</strong></font> only works with interrupt numbers which have been triggered using <font size=2 face=Courier><strong>interrupt_raise_number()</strong></font>. It has no effect on interrupts which have been triggered by a peripheral.</em></font>
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<h3>
<a name="1206453"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Applies to</font>
</h3>
<p>
<a name="1206454"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">ILC-1, ILC-2, ILC-3.</font>
</p>
<h3>
<a name="1206455"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
</h3>
<p>
<a name="1206456"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A task, interrupt service routine or a high priority process (on an ST20C2).</font>
</p>
<h3>
<a name="1243060"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1243067"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="libs31.htm#1206416"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_clear</i></font></a>, <a href="libs50.htm#1206999"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_raise_number</i></font></a>, <a href="libs47.htm#1242528"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_pending</i></font></a></font>
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