Enable WASM for book.math, and tweak examples

Author: derickr

reference/math/book.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<book xml:id="book.math" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
+<book xml:id="book.math" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" annotations="interactive">
  <?phpdoc extension-membership="core" ?>
  <title>Mathematical Functions</title>
  <titleabbrev>Math</titleabbrev>

reference/math/functions/ceil.xml

@@ -73,9 +73,9 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-echo ceil(4.3);    // 5
-echo ceil(9.999);  // 10
-echo ceil(-3.14);  // -3
+echo ceil(4.3), PHP_EOL;    // 5
+echo ceil(9.999), PHP_EOL;  // 10
+echo ceil(-3.14), PHP_EOL;  // -3
 ?>
 ]]>
     </programlisting>

reference/math/functions/deg2rad.xml

@@ -48,7 +48,7 @@
 <![CDATA[
 <?php
 
-echo deg2rad(45); // 0.785398163397
+echo deg2rad(45), PHP_EOL; // 0.785398163397
 var_dump(deg2rad(45) === M_PI_4); // bool(true)
 
 ?>

reference/math/functions/exp.xml

@@ -50,16 +50,16 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-echo exp(12) . "\n";
+echo exp(12), PHP_EOL;
 echo exp(5.7);
 ?>
 ]]>
     </programlisting>
     &example.outputs;
     <screen>
 <![CDATA[
-1.6275E+005
-298.87
+162754.791419
+298.86740096706
 ]]>
     </screen>
    </example>

reference/math/functions/floor.xml

@@ -71,9 +71,9 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-echo floor(4.3);   // 4
-echo floor(9.999); // 9
-echo floor(-3.14); // -4
+echo floor(4.3), PHP_EOL;   // 4
+echo floor(9.999), PHP_EOL; // 9
+echo floor(-3.14), PHP_EOL; // -4
 ?>
 ]]>
     </programlisting>

reference/math/functions/fmod.xml

@@ -65,6 +65,8 @@ $x = 5.7;
 $y = 1.3;
 $r = fmod($x, $y);
 // $r equals 0.5, because 4 * 1.3 + 0.5 = 5.7
+
+var_dump($x, $y, $r);
 ?>
 ]]>
     </programlisting>

reference/math/functions/hexdec.xml

@@ -76,12 +76,21 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-var_dump(hexdec("See"));
-var_dump(hexdec("ee"));
-// both print "int(238)"
-
+var_dump(hexdec("ee")); // prints "int(238)"
+var_dump(hexdec("a0")); // prints "int(160)"
+?>
+]]>
+    </programlisting>
+   </example>
+  </para>
+  <para>
+   <example>
+    <title><function>hexdec</function> with Invalid Characters</title>
+    <programlisting role="php">
+<![CDATA[
+<?php
+var_dump(hexdec("See"));  // print "int(238)"
 var_dump(hexdec("that")); // print "int(10)"
-var_dump(hexdec("a0")); // print "int(160)"
 ?>
 ]]>
     </programlisting>

reference/math/functions/intdiv.xml

@@ -66,11 +66,10 @@ var_dump(intdiv(3, -2));
 var_dump(intdiv(-3, -2));
 var_dump(intdiv(PHP_INT_MAX, PHP_INT_MAX));
 var_dump(intdiv(PHP_INT_MIN, PHP_INT_MIN));
-var_dump(intdiv(PHP_INT_MIN, -1));
-var_dump(intdiv(1, 0));
 ?>
 ]]>
     </programlisting>
+   &example.outputs;
     <screen>
 <![CDATA[
 int(1)
@@ -79,9 +78,35 @@ int(-1)
 int(1)
 int(1)
 int(1)
+]]>
+    </screen>
+   </example>
+  </para>
+  <para>
+   <example>
+    <title><function>intdiv</function> Example With Invalid Divisor</title>
+    <programlisting role="php">
+<![CDATA[
+<?php
+try {
+    intdiv(PHP_INT_MIN, -1);
+} catch (Error $e) {
+    echo get_class($e), ': ', $e->getMessage(), PHP_EOL;
+}
 
-Fatal error: Uncaught ArithmeticError: Division of PHP_INT_MIN by -1 is not an integer in %s on line 8
-Fatal error: Uncaught DivisionByZeroError: Division by zero in %s on line 9
+try {
+    intdiv(1, 0);
+} catch (Error $e) {
+    echo get_class($e), ': ', $e->getMessage(), PHP_EOL;
+}
+?>
+]]>
+    </programlisting>
+   &example.outputs;
+    <screen>
+<![CDATA[
+ArithmeticError: Division of PHP_INT_MIN by -1 is not an integer
+DivisionByZeroError: Division by zero
 ]]>
     </screen>
    </example>

reference/math/functions/max.xml

@@ -127,30 +127,35 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-echo max(2, 3, 1, 6, 7);  // 7
-echo max(array(2, 4, 5)); // 5
+echo max(2, 3, 1, 6, 7), PHP_EOL;  // 7
+echo max(array(2, 4, 5)), PHP_EOL; // 5
 
 // Here we are comparing -1 < 0, so 'hello' is the highest value
-echo max('hello', -1);    // hello
+echo max('hello', -1), PHP_EOL;    // hello
 
 // With multiple arrays of different lengths, max returns the longest
 $val = max(array(2, 2, 2), array(1, 1, 1, 1)); // array(1, 1, 1, 1)
+var_dump($val);
 
 // Multiple arrays of the same length are compared from left to right
 // so in our example: 2 == 2, but 5 > 4
 $val = max(array(2, 4, 8), array(2, 5, 1)); // array(2, 5, 1)
+var_dump($val);
 
 // If both an array and non-array are given, the array will be returned
 // as comparisons treat arrays as greater than any other value
 $val = max('string', array(2, 5, 7), 42);   // array(2, 5, 7)
+var_dump($val);
 
 // If one argument is NULL or a boolean, it will be compared against
 // other values using the rule FALSE < TRUE regardless of the other types involved
 // In the below example, -10 is treated as TRUE in the comparison
 $val = max(-10, FALSE); // -10
+var_dump($val);
 
 // 0, on the other hand, is treated as FALSE, so is "lower than" TRUE
 $val = max(0, TRUE); // TRUE
+var_dump($val);
 ?>
 ]]>
     </programlisting>

reference/math/functions/min.xml

@@ -127,32 +127,39 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-echo min(2, 3, 1, 6, 7);  // 1
-echo min(array(2, 4, 5)); // 2
+echo min(2, 3, 1, 6, 7), PHP_EOL;  // 1
+echo min(array(2, 4, 5)), PHP_EOL; // 2
 
 // Here we are comparing -1 < 0, so -1 is the lowest value
-echo min('hello', -1);    // -1
+echo min('hello', -1), PHP_EOL;    // -1
 
 // With multiple arrays of different lengths, min returns the shortest
 $val = min(array(2, 2, 2), array(1, 1, 1, 1)); // array(2, 2, 2)
+var_dump($val);
 
 // Multiple arrays of the same length are compared from left to right
 // so in our example: 2 == 2, but 4 < 5
 $val = min(array(2, 4, 8), array(2, 5, 1)); // array(2, 4, 8)
+var_dump($val);
 
 // If both an array and non-array are given, the array is never returned
 // as comparisons treat arrays as greater than any other value
 $val = min('string', array(2, 5, 7), 42);   // string
+var_dump($val);
 
 // If one argument is NULL or a boolean, it will be compared against
 // other values using the rules FALSE < TRUE and NULL == FALSE regardless of the 
 // other types involved
 // In the below examples, both -10 and 10 are treated as TRUE in the comparison
 $val = min(-10, FALSE, 10); // FALSE
+var_dump($val);
+
 $val = min(-10, NULL, 10);  // NULL
+var_dump($val);
 
 // 0, on the other hand, is treated as FALSE, so is "lower than" TRUE
 $val = min(0, TRUE); // 0
+var_dump($val);
 ?>
 ]]>
     </programlisting>