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<H2>pointer_to_unary_function</H2>
<HR><PRE>     Function Object</PRE><HR>
<A NAME="Summary"><H3>Summary</H3></A>
<P>A function object class that adapts a <I>pointer to a function </I>to work where a <A HREF="una_4659.htm"><B><I>unary_function</B></I></A> is called for.</P>
<H3>Contents</H3>
<UL>
<A HREF="#Synopsis"><LI>Synopsis</LI></A>
<A HREF="#Description"><LI>Description</LI></A>
<A HREF="#Interface"><LI>Interface</LI></A>
<A HREF="#See Also"><LI>See Also</LI></A>
</UL>
<A NAME="Synopsis"><H3>Synopsis</H3></A>
<PRE>#include &#60;functional></PRE>
<PRE>
template &#60;class Arg, class Result>
class <B>pointer_to_unary_function</B> : public unary_function&#60;Arg, Result>;
</PRE>
<A NAME="Description"><H3>Description</H3></A>
<P>The <B><I>pointer_to_unary_function</B></I> class encapsulates a pointer to a single-argument function.  The class provides an <SAMP>operator()</SAMP> so that the resulting object serves as a function object for that function.</P>
<P>The <SAMP>ptr_fun</SAMP> function is overloaded to create instances of <B><I>pointer_to_unary_function</B></I> when provided with the appropriate pointer to a function. </P>
<A NAME="Interface"><H3>Interface</H3></A>
<PRE>template &#60;class Arg, class Result>
class pointer_to_unary_function : public unary_function&#60;Arg, Result> {
 public:
   typedef typename unary_function&#60;Arg,Result>::argument_type 
                                                argument_type;
   typedef typename unary_function&#60;Arg,Result>::result_type 
                                                result_type;   
   explicit pointer_to_unary_function (Result (*f)(Arg));
   Result operator() (const Arg&#38;) const;
};
template&#60;class Arg, class Result>
pointer_to_unary_function&#60;Arg, Result>
  ptr_fun (Result (*f)(Arg));
</PRE>
<A NAME="See Also"><H3>See Also</H3></A>
<P><A HREF="Fun_7437.htm"><B><I>Function Objects</B></I></A>, <A HREF="poi_3537.htm"><B><I>pointer_to_binary_function</B></I></A>, <A HREF="ptr_4059.htm"><B><I>ptr_fun</B></I></A>, <A HREF="una_4659.htm"><B><I>unary_function</B></I></A></P>
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