do not try to display a tab that was not built

libraries/PHPExcel/PHPExcel/Shared/JAMA/utils/Maths.php

@@ -0,0 +1,40 @@
+<?php
+/** 
+* @package JAMA
+*
+* Pythagorean Theorem:
+*
+* a = 3
+* b = 4
+* r = sqrt(square(a) + square(b))
+* r = 5
+*
+* r = sqrt(a^2 + b^2) without under/overflow. 
+*/
+function hypo($a, $b) {
+  if (abs($a) > abs($b)) {     
+    $r = $b/$a;
+    $r = abs($a)* sqrt(1+$r*$r);
+  } else if ($b != 0) {
+    $r = $a/$b;
+    $r = abs($b)*sqrt(1+$r*$r);
+  } else 
+    $r = 0.0;
+  return $r;
+}  
+
+/**
+* Mike Bommarito's version.
+* Compute n-dimensional hyotheneuse.
+*
+function hypot() {
+  $s = 0;
+  foreach (func_get_args() as $d) {
+    if (is_numeric($d)) 
+      $s += pow($d, 2);
+    else 
+      trigger_error(ArgumentTypeException, ERROR);
+  }
+  return sqrt($s);
+}
+*/