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--- lab8 [2017/03/02 15:00] – franck
+++ lab8 [2018/02/25 15:00] (current) – franck
@@ Line 1: / Line 1: @@
-====== Lab 8 ======
+====== Lab 6 ======
 Consider the following app.
-<html>
+<code java>
-<pre>
+public class Main {
-public class ComputeSquareRoot {
     public static void main(String[] args) {
-          double data = 3.1415926;
+        System.out.println(StrictMath.cbrt(4.4));
-          System.out.println("The square root of " + data + " is " + StrictMath.sqrt(data));
     }
 }
-</pre>
+</code>
-</html>
+If we run JPF with the following configuration file
+<code>
+target=Main
+classpath=(directory that contains Main.class)
+</code>
+then we obtain output similar to the following.
+<code>
+JavaPathfinder core system v8.0 (rev 29+) - (C) 2005-2014 United States Government. All rights reserved.
+====================================================== system under test
+Main.main()
+====================================================== search started: 3/12/17 9:55 PM
+====================================================== error 1
+gov.nasa.jpf.vm.NoUncaughtExceptionsProperty
+java.lang.UnsatisfiedLinkError: cannot find native java.lang.StrictMath.cbrt
+        at java.lang.StrictMath.cbrt(no peer)
+        at Main.main(Main.java:6)
+...
+</code>
+  * Implement a native peer class.  Add to the native peer a call to println with "native peer class" so that JPF produces the following output for the above app.<code>
+JavaPathfinder core system v8.0 (rev 29+) - (C) 2005-2014 United States Government. All rights reserved.
+====================================================== system under test
+Main.main()
+====================================================== search started: 3/12/17 9:59 PM
+native peer class
+.6386425412012917
+====================================================== results
+no errors detected
+...
+</code>Submit your native peer class **and** your configuration file (name it Main-native-peer.jpf).
+  * Implement a peer class.  Add to the peer class a call to println with "peer class" so that JPF produces output for the above app similar to the following.  Information about the cubic root can be found {{https://en.wikipedia.org/wiki/Cube_root|here}}.  Ensure that the modelled cbrt method satisfies the specification given in the API of the StrictMath class.  Some methods in the Double class might be useful.<code>
+JavaPathfinder core system v8.0 (rev 29+) - (C) 2005-2014 United States Government. All rights reserved.
+====================================================== system under test
+Main.main()
+====================================================== search started: 3/12/17 10:06 PM
+peer class
+.6386425412012982
+====================================================== results
+no errors detected
+...
+</code>Submit your peer class <b>and</b> your configuration file (name it Main-model-class.jpf).
+To compile your classes, you may want to use
+<code>
+javac -cp /cs/fac/packages/jpf/jpf-core/build/jpf.jar:. (class name).java
+</code>
+or add /cs/fac/packages/jpf/jpf-core/build/jpf.jar as an external library to Eclipse.
+To receive feedback, submit both classes and configuration files using
+<code>
+submit 4315 lab6 (name of file)
+</code>
+before Tuesday March 6.
-  - Develop a model class so that the above app can be verified with JPF.  [[https://en.wikipedia.org/wiki/Methods_of_computing_square_roots|This]] Wikipedia page might be helpful.
-  - Develop a native peer so that the above app can be verified with JPF.