CSAPP_LAB.Zhaominghao.2024Fall.DASE
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<html>  <head>    <title>Data Lab Release Notes</title>  </head>
  <body bgcolor=white>    <h1>Data Lab Release Notes</h1>
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<h2>12/16/2019</h2><ul>  <li>Updated writeup and grade directory to match the default puzzle set.  <i>Thanks to Chen Su</i></ul>
<h2>11/1/2018</h2><ul>  <li>Corrected a header comment in the satAdd puzzle.  <i>Thanks to Prof. Hugh Lauer, Justin Aquilante, and Nick Krichevsky, WPI.</i></ul>
<h2>10/24/2018</h2><ul>  <li>Fixed a build bug in the BDD checker.</ul>
<h2>10/23/2018</h2><ul>  <li>Added some new puzzles, fixed a typo in the comment for the  rotateRight puzzle, and fixed a build bug in an earlier version.<i>Thanks to Prof. Hugh Lauer, WPI, for identifying the build bug.</i><i>Thanks to Prof. Bryan Dixon, Cal State Chico, for identifying the rotateRight typo.</i></ul>
<h2>5/4/2016</h2><ul><li>Added the <kbd>-std=gnu89</kbd> flag to the dlc Makefile so that gcc 5 will correctly compile dlc (addresses a constraint on inline functions introduced in gcc 5).<i>Thanks to Prof. Branch Archer, West Texas A&M University.</i></ul>
<h2>2/17/2016</h2><ul><li>Added a note to the README that bison and flex must be installed in order to rebuild dlc.<i>Thanks to Prof. Michael Ross, Portland Community College.</i></ul>
<h2>9/16/2014</h2><ul><li>Applied patch to the ANSI C grammar for dlc to accomodate stricter type rules in more recent versions of bison. <li>Eliminated unneccessary calls to bison and flex in the dlc Makefile. <i>Thanks to Prof. Robert Marmorstein, Longwood University.</i></ul>
<h2>9/2/2014</h2><ul><li>Fixed bug in <kbd>grade/grade-datalab.pl</kbd> autograding script.</ul>
<h2>1/30/2014</h2><ul><li>Fixed comment in code for logicalShift to indicate that '!'is an allowed operator.<i>Thanks to Prof. Aran Clauson of Western Washington University</i></ul>
<h2>9/19/2012</h2><ul><li>Fixed bug in line 147, btest.c: incorrect initial value for NaN.<i>Thanks to Prof. Cary Gray,  Wheaton College</i></ul>
<h2>4/26/2012</h2><ul><li>Added a clarifying note to the main README file remindinginstructors that, because there are different versions of dynamic libraries,Linux binaries such as dlc are not necessarily portableacross different Linux platforms. <i>Thanks to Prof. Hugh Lauer,  Worcester Polytechnic Institute</i>
<li>Cleaned up some compiler warnings in the<kbd>isLessOrEqual.c</kbd> and <kbd>isPositive.c</kbd> puzzle solutions</ul>
<h2>8/22/2011</h2><ul>
<li>Modified the "start" rule in Makefile to touch the log.txt filebefore starting up the lab daemons, so that an empty scoreboard iscreated initially. <i>Thanks to Prof. Godmar Back, Virginia Tech.</i>
</ul>
<h2>5/31/2011</h2><ul><li>For fun, we've added an optional user-level HTTP-based "Beat theProf" contest that replaces the old email-based version. The newcontest is very simple to run, is completely self-contained, and does not require rootpassword.  The only requirement is that you have a user account on aLinux machine with an IP address.
<li> Corrected a few minor typos in various README files.</ul>
<h2>1/2/2011</h2><b>This is a major update of the Data Lab:</b><ul><li> Introduced floating-point puzzles. 
<li> Added many new integer puzzles (There are now 73 puzzles total). 
<li> Made significant improvements to <kbd>btest</kbd>. It now doesmillions of tests for each puzzle, checking wide swaths around Tmin,0, denorm-normalized boundary, and inf. Also added support forfloating-point puzzles.
<li> Added support for floating-point puzzles to <kbd>dlc</kbd>.
<li> Added a new autograder called <kbd>driver.pl</kbd> that uses<kbd>dlc</kbd> and <kbd>btest</kbd> to check for correctness andconformance to the coding guidelines.
<li> Top-level directory now conforms to the CS:APP convention of putting all source files in the ./src directory.
<li> In <kbd>driver.pl</kbd>, replaced "the cp {f1,f2,..,fn} target" notation,which some shells don't handle, with the more portable "cp f1 f2 ... fn target" form.
<li> The lab writeup is longer included in the<kbd>datalab-handout</kbd> directory, to allow instructors greaterflexibility in distributing and updating the writeup while the lab isbeing offered.  
</ul>
<h2>8/29/2003</h2><ul><li> Fixed a minor bug that caused <kbd>btest</kbd> to test the<kbd>tc2sm</kbd> puzzle with an input of <kbd>Tmin</kbd>, which isn't definedin sign-magnitude.</ul>
<h2>1/27/2003</h2><ul><li> More operator-efficient solution to the <kbd>isPower2.c</kbd>puzzle. <i>Thanks to Al Davis, Univ of Utah.</i><li> The <kbd>selections-all.c</kbd> file now lists all 41 puzzles.</ul>
<h2>9/26/2002</h2><ul><li> Now includes a prebuilt Linux/IA32 binary for the <kbd>dlc</kbd> compiler.<li> Fixes a bug (an uninitialized stack variable) thatcaused "<kbd>dlc -Z</kbd>" to crash on some systems.
<li> Contains some new scripts for running an interactive <a href="http://www.cs.cmu.edu/afs/cs/academic/class/15213-f02/www/daemons/dlcontest.html">"Beat the Prof" contest </a>,<br> where students try to outperform theinstructor's (intentionally non-optimal) solution.</ul>
<h2>6/3/2002</h2><ul><li> Initial release.</ul>

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