diff --git a/Sd1/P/math/V0_5/.gitignore b/Sd1/P/math/V0_5/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..4e247eee2103b4d4a35eba38166587fee1391f0e
--- /dev/null
+++ b/Sd1/P/math/V0_5/.gitignore
@@ -0,0 +1,4 @@
+/.settings
+/target
+/.classpath
+/.project
diff --git a/Sd1/P/math/V0_5/pom.xml b/Sd1/P/math/V0_5/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..3bb2ff32bae9e91c28a9d65311eba46f349ab7eb
--- /dev/null
+++ b/Sd1/P/math/V0_5/pom.xml
@@ -0,0 +1,69 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>de.hdm-stuttgart.de.sd1</groupId>
+ <artifactId>math</artifactId>
+ <version>0.5</version>
+ <packaging>jar</packaging>
+
+ <name>math</name>
+ <url>http://maven.apache.org</url>
+
+ <properties>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ <javadocDestdir>~/tmp</javadocDestdir>
+ </properties>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>2.3.2</version>
+ <configuration>
+ <source>1.8</source>
+ <target>1.8</target>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <version>2.9.1</version>
+ <configuration>
+ <linksource>true</linksource>
+ <!-- Setting destDir interferes with taglet class -->
+ <additionalJOptions>
+ <additionalJOption>-d ${javadocDestdir}</additionalJOption>
+ </additionalJOptions>
+
+ <taglets>
+ <taglet>
+ <tagletClass>de.hdm_stuttgart.de.sd1.taglet.HtmlExtensionTaglet</tagletClass>
+ </taglet>
+ </taglets>
+ <tagletpath>../../../../../../../ws/eclipse/HtmlExtensionTaglet/target/classes</tagletpath>
+ </configuration>
+ </plugin>
+ </plugins>
+
+ <resources>
+ <resource>
+ <directory>src/main/java</directory>
+ <includes>
+ <include> **/*.properties</include>
+ </includes>
+ </resource>
+ </resources>
+ </build>
+
+ <dependencies>
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ <version>3.8.1</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+</project>
diff --git a/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Driver.java b/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Driver.java
new file mode 100644
index 0000000000000000000000000000000000000000..9610c8ca81650641873456b718a750921bc4850e
--- /dev/null
+++ b/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Driver.java
@@ -0,0 +1,18 @@
+package de.hdm_stuttgart.de.sd1.math;
+
+/**
+ * Testing {@link Math#exp(double)}in
+ *
+ */
+public class Driver {
+
+ /**
+ * @param args Unused
+ */
+ public static void main(String[] args) {
+
+ System.out.println("max (1, 7, 2)=" + Math.max(1, 7, 2));
+
+ }
+
+}
diff --git a/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Math.java b/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Math.java
new file mode 100644
index 0000000000000000000000000000000000000000..6b9a4505eb73fce3d594f1e17b9d71e95a54c19e
--- /dev/null
+++ b/Sd1/P/math/V0_5/src/main/java/de/hdm_stuttgart/de/sd1/math/Math.java
@@ -0,0 +1,53 @@
+package de.hdm_stuttgart.de.sd1.math;
+
+/**
+ * Some class methods.
+ */
+public class Math {
+
+ /**
+ * Return the absolute value of a given argument
+ * @param value The argument to be considered
+ * @return the argument's absolute (positive) value.
+ */
+ public static double abs(double value) {
+ if (value < 0) {
+ return -value;
+ } else {
+ return value;
+ }
+ }
+
+ /**
+ * The maximum of two arguments
+ * @param a First argument
+ * @param b Second argument
+ * @return The maximum of a and b
+ */
+ public static double max(double a, double b) {
+ return a < b ? b : a; // very compact, avoiding "if". Readability??
+ }
+
+ /**
+ * The maximum of three arguments
+ *
+ * @param a First argument
+ * @param b Second argument
+ * @param c Third argument
+ * @return The maximum of a, b and c
+ */
+ public static double max(double a, double b, double c) {
+ final double max_A_B;
+ if (a < b) {
+ max_A_B = b;
+ } else {
+ max_A_B = a;
+ }
+
+ if (c < max_A_B) {
+ return max_A_B;
+ } else {
+ return c;
+ }
+ }
+}
diff --git a/Sd1/P/math/V0_5/src/test/java/de/hdm_stuttgart/de/sd1/math/ExpTest.java b/Sd1/P/math/V0_5/src/test/java/de/hdm_stuttgart/de/sd1/math/ExpTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..1476e3091562039cbbd1485c324d771361106772
--- /dev/null
+++ b/Sd1/P/math/V0_5/src/test/java/de/hdm_stuttgart/de/sd1/math/ExpTest.java
@@ -0,0 +1,25 @@
+package de.hdm_stuttgart.de.sd1.math;
+
+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Testing exponential implementation
+ *
+ */
+public class ExpTest extends TestCase {
+ /**
+ * @return the suite of tests being tested
+ */
+ public static Test suite() {
+ final TestSuite testsuite = new TestSuite("Testing exponential");
+ testsuite.addTestSuite(ExpTest.class);
+ return testsuite; }
+
+ /**
+ * Sums and products of fractions
+ */
+ public void testApp() {
+ }
+}
diff --git a/Sd1/swd1.xml b/Sd1/swd1.xml
index b4d476280238b86fc946a5cd051a3d7e456b8a87..c680617d21afd8c3f43bba85955714f7e2e2d5a1 100644
--- a/Sd1/swd1.xml
+++ b/Sd1/swd1.xml
@@ -3237,9 +3237,77 @@ Is 2016 a leap year? true</programlisting>
</qandaset>
</section>
- <section xml:id="sd1SecExp">
+ <section xml:id="sd1MathMaxAbs">
<title>Building a private library of mathematical functions.</title>
+ <para>The following sections provide exercises on implementing
+ mathematical functions. We start with an easy one.</para>
+
+ <qandaset defaultlabel="qanda" xml:id="sd1QandaMaxAbs">
+ <title>Maximum and absolute value</title>
+
+ <qandadiv>
+ <qandaentry>
+ <question>
+ <para>Implement two class methods double abs(double) and double
+ max(double, double, double) in a class math living in a package
+ of your choice:</para>
+
+ <programlisting language="java">package de.hdm_stuttgart.de.sd1.math;
+
+/**
+ * Some class methods.
+ */
+public class Math {
+
+ /**
+ * Return the absolute value of a given argument
+ * @param value The argument to be considered
+ * @return the argument's absolute (positive) value.
+ */
+ public static double abs(double value) {
+ ... return ??;
+ }
+
+ /**
+ * The maximum of two arguments
+ * @param a First argument
+ * @param b Second argument
+ * @return The maximum of a and b
+ */
+ public static double max(double a, double b) {
+ ... return ??;
+ }
+
+ /**
+ * The maximum of three arguments
+ *
+ * @param a First argument
+ * @param b Second argument
+ * @param c Third argument
+ * @return The maximum of a, b and c
+ */
+ public static double max(double a, double b, double c) {
+ ... return ??;
+ }
+}</programlisting>
+
+ <para>Test these functions using appropriate data.</para>
+ </question>
+
+ <answer>
+ <para>See <link
+ xlink:href="Ref/api/P/math/V0_5/src-html/de/hdm_stuttgart/de/sd1/math/Math.html">implementation
+ here.</link></para>
+ </answer>
+ </qandaentry>
+ </qandadiv>
+ </qandaset>
+ </section>
+
+ <section xml:id="sd1SecExp">
+ <title>Implementing the exponential function.</title>
+
<qandaset defaultlabel="qanda" xml:id="sd1QandaMath">
<title>The exponential <inlineequation>
<m:math display="inline">