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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict. <html> <head> <!-- --------------------HEADER------------------------ --> <title>HAP - content download</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="Stylesheet" href="../HAPstyles.css" type="text/css" media="screen,print"> <style type="text/css"></style> </head> <body id="content" style="background-image: url(../background.png);"> <div id="content"> <p></p> <h3>Download Instructions</h3> <p> On a Linux machine with GAP installed, the HAP library can be loaded as follows:<br> </p> <ul> <li>First download the file <a href="https://github.com/gap-packages/hap/releases/download/v1.70/hap-1.70.tar.g which contains the most recent development version of HAP to the subdirectory "pkg/" of GAP. If you don't have access to this subdirectory, then create a directory "pkg" in your home directory and download the file there. (If you'd prefer to download the most recent development version of HAP then download the file <a href="https://github.com/gap-packages/hap/releases/download/v1.47/hap-1.47.tar.g instead.)<br> </li> </ul> <ul> <li>Change to directory "pkg/" and type "gunzip hap1.70.tar.gz" followed by "tar -xvf hap1.70.tar" . </ul> <ul> <li>Start GAP. (If you have created "pkg" in your home directory then start GAP with the command "gap -l 'path/homedir;' " where path/homedir is the path to your home directory.)</li> </ul> <ul> <li>In GAP type " LoadPackage("HAP"); "<br> </li> </ul> <ul> <li>Help on HAP can be found on the <a href="https://gap-packages.github.io/hap/" target="index">HAP home page</a> (a version of which is included in directory "pkg/Hap1.70/www" of the distribution).</li> </ul> <ul> <li>A few of HAP's (optional) functions rely on Polymake software (available from www.math.tu-berlin.de/polymake/) which should be installed so that it starts using the command "polymake" at the Linux prompt. A few (optional) functions rely on Graphviz software (available from https://www.graphviz.org/).<br> </li> </ul> <ul> <li>Performance can be improved by using a compiled version of the HAP library. The following steps will produce a compiled version. <br> (1) Change to the directory "pkg/Hap1.70/" .<br> (2) Edit the file "compile" so that: PKGDIR is equal to the path to the<br> directory "pkg" where your GAP packages are stored; GACDIR is equal to the<br> path to the directory where the GAP compiler "gac" is stored.<br> (3) Type "./compile" .<br> The next time HAP is loaded a compiled version will be loaded.</li> </ul> <ul> <li>Should you want to return to an uncompiled version, change to the directory<br> "pkg/Hap1.70/" and type "./uncompile".</li> </ul> </div> </body> </html>
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2026-04-02