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<HTML><HEAD><TITLE> Installing the LDPC Software </TITLE></HEAD><BODY><H1> Installing the LDPC Software </H1>The LDPC software is written in C, and may well work with any Ccompiler, though it has been tested only in a Unix/Linux environment,and in the <A HREF="http://www.cygwin.com">cygwin</A> Unix environmentthat runs under Microsoft Windows. The installation instructionsbelow assume that you are using a Unix-like system.<P>All the software, including the documentation you are viewing here,is contained in a Unix tar file, which you can download by clicking oneof the options below:<BLOCKQUOTE> <A HREF="http://www.cs.utoronto.ca/~radford/ftp/LDPC-2006-02-08/LDPC-2006-02-08.tar">Tar file of LDPC software</A> (0.9 Megabytes)<BR> <A HREF="http://www.cs.utoronto.ca/~radford/ftp/LDPC-2006-02-08/LDPC-2006-02-08.tar.gz">Gzipped tar file of LDPC software</A> (0.4 Megabytes)</BLOCKQUOTE><P>Once you obtain the tar file (and uncompress it with gunzip ifnecessary), you should extract the files with the following Unix command:<BLOCKQUOTE><PRE>tar xf LDPC-2006-02-08.tar</PRE></BLOCKQUOTE>This will create a directory called <TT>LDPC-2006-02-08</TT>, and placeall the source, documentation, and other files in this directory. <P>If you prefer for this directory to be called something else,rename it <B>now</B>, before compiling the programs, since the file<TT>randfile</TT> in this directory, containing natural random numbers,is accessed according to its path when the programs were compiled.<P>Once the tar command above has finished, you should change into thenewly-created directory, and type <BLOCKQUOTE><PRE>make</PRE></BLOCKQUOTE>If all goes well, this should compile all the programs (except for sometest programs). <P>The sub-directory <TT>bin</TT> contains symbolic links to all theseprograms. You might want to place it in the PATH variable used byyour shell to find programs.<P>The LDPC directory contains a copy of all the HTML filesdocumenting the software, such as the one you are reading now, withthe file <TT>index.html</TT> being the starting point. I recommendedthat you use this local copy when referring to the documentation, ratherthan get it from my web page. Just tell your browser to open the URL<BLOCKQUOTE><PRE>file:<I>path-to-software</I>/index.html</PRE></BLOCKQUOTE>where <TT><I>path-to-software</I></TT> is the full path (starting with "/") to the directory where you've put the software.<P>The command<BLOCKQUOTE><PRE>make clean</PRE></BLOCKQUOTE>will remove all the compiled programs, as well as the files created whenthe <A HREF="examples.html">examples</A> are run, and <TT>core</TT>, if it exists.<HR><A HREF="index.html">Back to index for LDPC software</A></BODY></HTML>?? 快捷鍵說明
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