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52 lines
1.7 KiB
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52 lines
1.7 KiB
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<TITLE>cc65 function reference: Alphabetical function reference: signal</TITLE>
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<H2><A NAME="signal"></A> 3.132 <A HREF="funcref.html#toc3.132">signal</A></H2>
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<P>
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<BLOCKQUOTE>
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<DL>
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<DT><B>Function</B><DD><P>Install a signal handler.</P>
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<DT><B>Header</B><DD><P><CODE>
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<A HREF="funcref-33.html#signal.h">signal.h</A></CODE></P>
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<DT><B>Declaration</B><DD><P><CODE>__sigfunc __fastcall__ signal (int sig, __sigfunc func);</CODE></P>
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<DT><B>Description</B><DD><P><CODE>signal</CODE> installs a handler for the given signal. The
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handler may either be a user supplied function, or one of the predefined
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signal handlers <CODE>SIG_IGN</CODE> or <CODE>SIG_DFL</CODE>. The function returns the
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previous value if the signal , or the special function vector SIG_ERR in
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case of an error.</P>
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<DT><B>Limits</B><DD><P>
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<UL>
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<LI>The function is only available as fastcall function, so it may only
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be used in presence of a prototype.</LI>
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</UL>
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</P>
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<DT><B>Availability</B><DD><P>ISO 9899</P>
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<DT><B>See also</B><DD><P>
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<A HREF="funcref-62.html#abort">abort</A>,
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<A HREF="funcref-167.html#raise">raise</A></P>
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<DT><B>Example</B><DD><P>None.</P>
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