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original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>The C++ Interface</TITLE><META NAME="description" CONTENT="The C++ Interface"><META NAME="keywords" CONTENT="cuddIntro"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global">
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<UL><LI><A NAME="tex2html186" HREF="node5.html#SECTION00051000000000000000">Compiling and Linking</A><LI><A NAME="tex2html187" HREF="node5.html#SECTION00052000000000000000">Basic Manipulation</A></UL><!--End of Table of Child-Links--><HR>
<H1><A NAME="SECTION00050000000000000000"></A><A NAME="sec:cpp"></A><BR>The C++ Interface</H1>
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<H2><A NAME="SECTION00051000000000000000"></A><A NAME="sec:compileCpp"></A><BR>Compiling and Linking</H2>
<P>To build an application that uses the CUDD C++ interface, you shouldadd<PRE>#include "cuddObj.hh"</PRE>to your source files. In addition to the normal CUDD libraries (seeSection <A HREF="node3.html#sec:compileExt">3.1</A>) you should link<code>libobj.a</code><A NAME="1051"></A> to your executable. Refer to the<TT>Makefile<A NAME="1052"></A></TT> in the top level directory of thedistribution for further details.
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<H2><A NAME="SECTION00052000000000000000"></A><A NAME="sec:basicCpp"></A><BR>Basic Manipulation</H2>
<P>The following fragment of code illustrates some simple operations onBDDs using the C++ interface.<PRE> Cudd mgr(0,0); BDD x = mgr.bddVar(); BDD y = mgr.bddVar(); BDD f = x * y; BDD g = y + !x; cout << "f is" << (f <= g ? "" : " not") << " less than or equal to g\n";</PRE>This code creates a manager called <code>mgr</code> and two variables in it.It then defines two functions <code>f</code> and <code>g</code> in terms of thevariables. Finally, it prints a message based on the comparison of thetwo functions. No explicit referencing or dereferencing is required.The operators are overloaded in the intuitive way. BDDs are freed whenexecution leaves the scope in which they are defined or when thevariables referring to them are overwritten.
<P><BR><HR><ADDRESS>Fabio Somenzi2012-02-04</ADDRESS></BODY></HTML>
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