diff --git a/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Error.php b/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Error.php
new file mode 100644
index 0000000..e73252b
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Error.php
@@ -0,0 +1,82 @@
+<?php
+/**
+ *	@package JAMA
+ *
+ *	Error handling
+ *	@author Michael Bommarito
+ *	@version 01292005
+ */
+
+//Language constant
+define('JAMALANG', 'EN');
+
+
+//All errors may be defined by the following format:
+//define('ExceptionName', N);
+//$error['lang'][ExceptionName] = 'Error message';
+$error = array();
+
+/*
+I've used Babelfish and a little poor knowledge of Romance/Germanic languages for the translations here.
+Feel free to correct anything that looks amiss to you.
+*/
+
+define('PolymorphicArgumentException', -1);
+$error['EN'][PolymorphicArgumentException] = "Invalid argument pattern for polymorphic function.";
+$error['FR'][PolymorphicArgumentException] = "Modèle inadmissible d'argument pour la fonction polymorphe.".
+$error['DE'][PolymorphicArgumentException] = "Unzulässiges Argumentmuster für polymorphe Funktion.";
+
+define('ArgumentTypeException', -2);
+$error['EN'][ArgumentTypeException] = "Invalid argument type.";
+$error['FR'][ArgumentTypeException] = "Type inadmissible d'argument.";
+$error['DE'][ArgumentTypeException] = "Unzulässige Argumentart.";
+
+define('ArgumentBoundsException', -3);
+$error['EN'][ArgumentBoundsException] = "Invalid argument range.";
+$error['FR'][ArgumentBoundsException] = "Gamme inadmissible d'argument.";
+$error['DE'][ArgumentBoundsException] = "Unzulässige Argumentstrecke.";
+
+define('MatrixDimensionException', -4);
+$error['EN'][MatrixDimensionException] = "Matrix dimensions are not equal.";
+$error['FR'][MatrixDimensionException] = "Les dimensions de Matrix ne sont pas égales.";
+$error['DE'][MatrixDimensionException] = "Matrixmaße sind nicht gleich.";
+
+define('PrecisionLossException', -5);
+$error['EN'][PrecisionLossException] = "Significant precision loss detected.";
+$error['FR'][PrecisionLossException] = "Perte significative de précision détectée.";
+$error['DE'][PrecisionLossException] = "Bedeutender Präzision Verlust ermittelte.";
+
+define('MatrixSPDException', -6);
+$error['EN'][MatrixSPDException] = "Can only perform operation on symmetric positive definite matrix.";
+$error['FR'][MatrixSPDException] = "Perte significative de précision détectée.";
+$error['DE'][MatrixSPDException] = "Bedeutender Präzision Verlust ermittelte.";
+
+define('MatrixSingularException', -7);
+$error['EN'][MatrixSingularException] = "Can only perform operation on singular matrix.";
+
+define('MatrixRankException', -8);
+$error['EN'][MatrixRankException] = "Can only perform operation on full-rank matrix.";
+
+define('ArrayLengthException', -9);
+$error['EN'][ArrayLengthException] = "Array length must be a multiple of m.";
+
+define('RowLengthException', -10);
+$error['EN'][RowLengthException] = "All rows must have the same length.";
+
+/**
+ *	Custom error handler
+ *	@param int $num Error number
+ */
+function JAMAError($errorNumber = null) {
+	global $error;
+
+	if (isset($errorNumber)) {
+		if (isset($error[JAMALANG][$errorNumber])) {
+			return $error[JAMALANG][$errorNumber];
+		} else {
+			return $error['EN'][$errorNumber];
+		}
+	} else {
+		return ("Invalid argument to JAMAError()");
+	}
+}
diff --git a/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Maths.php b/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Maths.php
new file mode 100644
index 0000000..aa09a8b
--- /dev/null
+++ b/includes/PHPExcel/Classes/PHPExcel/Shared/JAMA/utils/Maths.php
@@ -0,0 +1,43 @@
+<?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 * $r);
+	} elseif ($b != 0) {
+		$r = $a / $b;
+		$r = abs($b) * sqrt(1 + $r * $r);
+	} else {
+		$r = 0.0;
+	}
+	return $r;
+}	//	function hypo()
+
+
+/**
+ *	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 {
+			throw new PHPExcel_Calculation_Exception(JAMAError(ArgumentTypeException));
+		}
+	}
+	return sqrt($s);
+}
+*/