diff --git a/src/PhpSpreadsheet/Calculation/Engineering.php b/src/PhpSpreadsheet/Calculation/Engineering.php
index b3305464..6504c197 100644
--- a/src/PhpSpreadsheet/Calculation/Engineering.php
+++ b/src/PhpSpreadsheet/Calculation/Engineering.php
@@ -1022,9 +1022,11 @@ class Engineering
 
             switch (floor($ord)) {
                 case 0:
-                    return self::besselK0($x);
+                    $fBk = self::besselK0($x);
+                    break;
                 case 1:
-                    return self::besselK1($x);
+                    $fBk = self::besselK1($x);
+                    break;
                 default:
                     $fTox = 2 / $x;
                     $fBkm = self::besselK0($x);
@@ -1106,9 +1108,11 @@ class Engineering
 
             switch (floor($ord)) {
                 case 0:
-                    return self::besselY0($x);
+                    $fBy = self::besselY0($x);
+                    break;
                 case 1:
-                    return self::besselY1($x);
+                    $fBy = self::besselY1($x);
+                    break;
                 default:
                     $fTox = 2 / $x;
                     $fBym = self::besselY0($x);
diff --git a/unitTests/Classes/src/Calculation/EngineeringTest.php b/unitTests/Classes/src/Calculation/EngineeringTest.php
index b5b03ab5..c26fc606 100644
--- a/unitTests/Classes/src/Calculation/EngineeringTest.php
+++ b/unitTests/Classes/src/Calculation/EngineeringTest.php
@@ -30,7 +30,6 @@ class EngineeringTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider providerBESSELI
-     * @group fail19
      */
     public function testBESSELI()
     {
@@ -47,7 +46,6 @@ class EngineeringTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider providerBESSELJ
-     * @group fail19
      */
     public function testBESSELJ()
     {
@@ -64,7 +62,6 @@ class EngineeringTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider providerBESSELK
-     * @group fail19
      */
     public function testBESSELK()
     {
@@ -81,7 +78,6 @@ class EngineeringTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider providerBESSELY
-     * @group fail19
      */
     public function testBESSELY()
     {
diff --git a/unitTests/rawTestData/Calculation/Engineering/BESSELI.data b/unitTests/rawTestData/Calculation/Engineering/BESSELI.data
index c5d347e8..226606f6 100644
--- a/unitTests/rawTestData/Calculation/Engineering/BESSELI.data
+++ b/unitTests/rawTestData/Calculation/Engineering/BESSELI.data
@@ -1,59 +1,55 @@
-1.5,	-1,	"#NUM!"
--1,	6,	2.2488660949282200E-05
-0,	3,	0.0
-3,	0,	4.8807925650332900
-1,	5,	2.7146314958504900E-04
-1.5,	1,	9.8166642847516600E-01
--1.5,	2.5,	3.3783462087443800E-01
--1.5,	14.99,	2.1218581758012900E-13
-1,	30,	3.5395005050254700E-42
-2.5,	1,	2.5167162420253600
-2.5,	1.5,	2.5167162420253600
--2.5,	1.5,	-2.5167162420253600
-3.5,	1,	6.2058349320630000
-0.7,	3,	7.3673733669342700E-03
-3.5,	2,	3.8320120716293600
-35,	2,	1.0129348967887200E+14
--35,	2,	1.0129348967887200E+14
--35,	3,	-9.4217724797020600E+13
--35,	4,	8.5141821583727800E+13
-1.5,	"XYZ",	"#VALUE!"
-"ABC",	3,	"#VALUE!"
--9,	1,	-1.0309147086534900E+03
--3.5,	1,	-6.2058349320630000
--0.735,	1,	-3.9288151661176300E-01
-0,	1,	0.0
-0.035,	1,	1.7502679823335300E-02
-1,	1,	5.6515909758194300E-01
-1.5,	1,	9.8166642847516600E-01
-2.5,	1,	2.5167162420253600
-3.5,	1,	6.2058349320630000
--9,	2,	8.6449622063929800E+02
--3.5,	2,	3.8320120716293600
--0.735,	2,	7.0619941066585700E-02
-0,	2,	0.0
-0.035,	2,	1.5314063208086000E-04
-0.9,	2,	1.0825972222234100E-01
-1,	2,	1.3574766658069900E-01
-1.9,	2,	6.0327243548745000E-01
-2.5,	2,	1.2764661588156100
-3.5,	2,	3.8320120716293600
-4,	2,	6.4221894991960900
-0.035,	3,	8.9329755645604500E-07
-0.7,	3,	7.3673733669342700E-03
-0.89,	3,	1.5428502532466100E-02
-4,	3,	3.3372758428109200
-4,	5,	5.0472437285149600E-01
-1.5,	7,	2.8406417355214300E-05
-3,	9,	1.3237298826652200E-04
--3.5,	0,	7.3782034775718600
--1.5,	0,	1.6467232021476800
-0,	0,	1.0
-1,	0,	1.2660658480342600
-1.5,	0,	1.6467232021476800
-2.5,	0,	3.2898391723912900
-3.5,	0,	7.3782034775718600
--3.5,	-1,	"#NUM!"
-TRUE,	1,	"#VALUE!"
-1,	TRUE,	"#VALUE!"
-21,	2,	1.0477785626593200E+08
+1.5,	-1,	"#NUM!"
+-1,	6,	0.00002249
+0,	3,	0.00000000
+3,	0,	4.88079259
+1,	5,	0.00027146
+1.5,	1,	0.98166643
+-1.5,	2.5,	0.33783462
+-1.5,	14.99,	0.00000000
+1,	30,	0.00000000
+2.5,	1,	2.51671625
+2.5,	1.5,	2.51671625
+-2.5,	1.5,	-2.51671625
+3.5,	1,	6.20583492
+0.7,	3,	0.00736737
+3.5,	2,	3.83201205
+1.5,	"XYZ",	"#VALUE!"
+"ABC",	3,	"#VALUE!"
+-9,	1,	-1030.91472252
+-3.5,	1,	-6.20583492
+-0.735,	1,	-0.39288152
+0,	1,	0.00000000
+0.035,	1,	0.01750268
+1,	1,	0.56515910
+1.5,	1,	0.98166643
+2.5,	1,	2.51671625
+3.5,	1,	6.20583492
+-9,	2,	864.49619395
+-3.5,	2,	3.83201205
+-0.735,	2,	0.07061994
+0,	2,	0.00000000
+0.035,	2,	0.00015314
+0.9,	2,	0.10825973
+1,	2,	0.13574767
+1.9,	2,	0.60327243
+2.5,	2,	1.27646615
+3.5,	2,	3.83201205
+4,	2,	6.42218938
+0.035,	3,	0.00000089
+0.7,	3,	0.00736737
+0.89,	3,	0.01542850
+4,	3,	3.33727578
+4,	5,	0.50472436
+1.5,	7,	0.00002841
+3,	9,	0.00013237
+-3.5,	0,	7.37820343
+-1.5,	0,	1.64672319
+0,	0,	1.00000000
+1,	0,	1.26606588
+1.5,	0,	1.64672319
+2.5,	0,	3.28983914
+3.5,	0,	7.37820343
+-3.5,	-1,	"#NUM!"
+TRUE,	1,	"#VALUE!"
+1,	TRUE,	"#VALUE!"
+21,	2,	104777847.71856035
diff --git a/unitTests/rawTestData/Calculation/Engineering/BESSELJ.data b/unitTests/rawTestData/Calculation/Engineering/BESSELJ.data
index f0d32bdb..13747bb2 100644
--- a/unitTests/rawTestData/Calculation/Engineering/BESSELJ.data
+++ b/unitTests/rawTestData/Calculation/Engineering/BESSELJ.data
@@ -1,37 +1,33 @@
-1.5,	-1,	"#NUM!"
-0,	1,	0.0
-1,	1,	4.4005058567713000E-01
-1,	5,	2.4975773021123400E-04
-1.9,	2,	3.2992582866978500E-01
--2.5,	1.5,	-4.9709410250442200E-01
-3.5,	1,	1.3737752717818600E-01
-0.89,	3,	1.3974004027880800E-02
-3.5,	2,	4.5862918476829000E-01
-35,	2,	1.2935945082689100E-01
--35,	2,	1.2935945082689100E-01
--35,	3,	2.9207004782372000E-02
--35,	4,	-1.3436636593244100E-01
-1.5,	"XYZ",	"#VALUE!"
-"ABC",	3,	"#VALUE!"
--3.5,	1,	-1.3737752717818600E-01
--0.735,	1,	-3.4323577520309400E-01
-0,	1,	0.0
-0.035,	1,	1.7497320451918700E-02
-1.5,	1,	5.5793650789080400E-01
-2.5,	1,	4.9709410250442200E-01
-3.5,	1,	1.3737752717818600E-01
--9,	2,	1.4484636919412800E-01
--0.735,	2,	6.4538955636373900E-02
-0,	2,	0.0
-0.9,	2,	9.4586304292255000E-02
-1.9,	2,	3.2992582866978500E-01
-0.035,	2,	1.5310936908796500E-04
-3.5,	2,	4.5862918476829000E-01
-4,	2,	3.6412814319431200E-01
-0.035,	3,	8.9316078090293600E-07
-0.7,	3,	6.9296548267509400E-03
-0.89,	3,	1.3974004027880800E-02
-4,	3,	4.3017147115339600E-01
-4,	5,	1.3208665605594800E-01
-1.5,	7,	2.4679795788287900E-05
-3,	9,	8.4395021309091800E-05
+1.5,	-1,	"#NUM!"
+0,	1,	0.00000000
+1,	1,	0.44005059
+1,	5,	0.00024976
+1.9,	2,	0.32992573
+-2.5,	1.5,	-0.49709410
+3.5,	1,	0.13737753
+0.89,	3,	0.01397400
+3.5,	2,	0.45862918
+1.5,	"XYZ",	"#VALUE!"
+"ABC",	3,	"#VALUE!"
+-3.5,	1,	-0.13737753
+-0.735,	1,	-0.34323578
+0,	1,	0.00000000
+0.035,	1,	0.01749732
+1.5,	1,	0.55793651
+2.5,	1,	0.49709410
+3.5,	1,	0.13737753
+-9,	2,	0.14484734
+-0.735,	2,	0.06453896
+0,	2,	0.00000000
+0.9,	2,	0.09458630
+1.9,	2,	0.32992573
+0.035,	2,	0.00015311
+3.5,	2,	0.45862918
+4,	2,	0.36412815
+0.035,	3,	0.00000089
+0.7,	3,	0.00692965
+0.89,	3,	0.01397400
+4,	3,	0.43017147
+4,	5,	0.13208666
+1.5,	7,	0.00002468
+3,	9,	0.00008440
diff --git a/unitTests/rawTestData/Calculation/Engineering/BESSELK.data b/unitTests/rawTestData/Calculation/Engineering/BESSELK.data
index 992d8945..736bcfe7 100644
--- a/unitTests/rawTestData/Calculation/Engineering/BESSELK.data
+++ b/unitTests/rawTestData/Calculation/Engineering/BESSELK.data
@@ -1,38 +1,38 @@
-1.5,	-1,	"#NUM!"
-0,	2,	"#NUM!"
-0.1,	3,	7.9900124326586500E+03
-1,	0,	4.2102442108341800E-01
-1.5,	0,	2.1380556932365400E-01
--1.5,	2,	"#NUM!"
-1.5,	1,	2.7738780363225900E-01
-1.5,	2,	5.8365597416666600E-01
-2.3,	1.5,	9.4982447142959400E-02
-2.5,	1,	7.3890815650266900E-02
-3.5,	1,	2.2239393224640700E-02
-3.5,	3,	5.9161817991348200E-02
-3,	9,	3.9795880106238500E+02
-3.5,	2,	3.2307121670869000E-02
-1.5,	"XYZ",	"#VALUE!"
-"ABC",	3,	"#VALUE!"
--3.5,	1,	"#NUM!"
--0.735,	1,	"#NUM!"
-0,	1,	"#NUM!"
-0.035,	1,	2.8501970000186900E+01
-1.5,	1,	2.7738780363225900E-01
-2.5,	1,	7.3890815650266900E-02
-3.5,	1,	2.2239393224640700E-02
--9,	2,	"#NUM!"
--0.735,	2,	"#NUM!"
-0,	2,	"#NUM!"
-0.9,	2,	2.0790271301014400
-1.9,	2,	2.9690930137427500E-01
-0.035,	2,	1.6321537072931900E+03
-3.5,	2,	3.2307121670869000E-02
-4,	2,	1.7401425543547400E-02
-0.035,	3,	1.8656035423207900E+05
-0.7,	3,	2.1972168909566600E+01
-0.89,	3,	1.0317473075007600E+01
-4,	3,	2.9884924431707800E-02
-4,	5,	1.5434254881392600E-01
-1.5,	7,	2.4577004526116700E+03
-3,	9,	3.9795880106238500E+02
+1.5,	-1,	"#NUM!"
+0,	2,	"#NUM!"
+0.1,	3,	7990.01243278
+1,	0,	0.42102444
+1.5,	0,	0.21380557
+-1.5,	2,	"#NUM!"
+1.5,	1,	0.27738780
+1.5,	2,	0.58365597
+2.3,	1.5,	0.09498245
+2.5,	1,	0.07389082
+3.5,	1,	0.02223939
+3.5,	3,	0.05916182
+3,	9,	397.95880106
+3.5,	2,	0.03230712
+1.5,	"XYZ",	"#VALUE!"
+"ABC",	3,	"#VALUE!"
+-3.5,	1,	"#NUM!"
+-0.735,	1,	"#NUM!"
+0,	1,	"#NUM!"
+0.035,	1,	28.50197000
+1.5,	1,	0.27738780
+2.5,	1,	0.07389082
+3.5,	1,	0.02223939
+-9,	2,	"#NUM!"
+-0.735,	2,	"#NUM!"
+0,	2,	"#NUM!"
+0.9,	2,	2.07902715
+1.9,	2,	0.29690930
+0.035,	2,	1632.15370729
+3.5,	2,	0.03230712
+4,	2,	0.01740143
+0.035,	3,	186560.35423214
+0.7,	3,	21.97216905
+0.89,	3,	10.31747315
+4,	3,	0.02988492
+4,	5,	0.15434255
+1.5,	7,	2457.70043955
+3,	9,	397.95880106
diff --git a/unitTests/rawTestData/Calculation/Engineering/BESSELY.data b/unitTests/rawTestData/Calculation/Engineering/BESSELY.data
index 90aea973..773cc7a7 100644
--- a/unitTests/rawTestData/Calculation/Engineering/BESSELY.data
+++ b/unitTests/rawTestData/Calculation/Engineering/BESSELY.data
@@ -1,37 +1,23 @@
-1.5,	-1,	"#NUM!"
-1.23,	45.67,	-2.7027311261175000E+63
-2.5,	0,	4.9807035844668900E-01
-2.5,	1,	1.4591813750831300E-01
-2.5,	2,	-3.8133584844003800E-01
-3.5,	1,	4.1018841662769800E-01
-3.5,	3,	-3.5833534643622900E-01
-4,	2,	2.1590359910699000E-01
-3.5,	2,	4.5371436417535000E-02
-12.5,	0,	-1.7121430684466900E-01
-12.5,	1,	-1.5383825635163900E-01
-12.5,	2,	1.4660018586805400E-01
-12.5,	22,	-3.5760343503878700E+02
-1.5,	"XYZ",	"#VALUE!"
-"ABC",	3,	"#VALUE!"
--3.5,	1,	"#NUM!"
--0.735,	1,	"#NUM!"
-0,	1,	"#NUM!"
-0.035,	1,	-1.8233338940000000E+01
-1.5,	1,	-4.1230862700000000E-01
-2.5,	1,	1.4591813800000000E-01
-3.5,	1,	4.1018841700000000E-01
--9,	2,	"#NUM!"
--0.735,	2,	"#NUM!"
-0,	2,	"#NUM!"
-0.9,	2,	-1.9459096070000000
-1.9,	2,	-6.6987867400000000E-01
-0.035,	2,	-1.0396979410000000E+03
-3.5,	2,	4.5371436000000000E-02
-4,	2,	2.1590359900000000E-01
-0.035,	3,	-1.1880438840000000E+05
-0.7,	3,	-1.5819479070000000E+01
-0.89,	3,	-8.0204412520000000
-4,	3,	-1.8202211000000000E-01
-4,	5,	-7.9585141800000000E-01
-1.5,	7,	-1.8873970340000000E+03
-3,	9,	-4.4495950710000000E+02
+1.5,	-1,	"#NUM!"
+2.5,	0,	0.49807036
+2.5,	1,	0.14591814
+2.5,	2,	-0.38133585
+3.5,	1,	0.41018842
+3.5,	3,	-0.35833535
+3.5,	2,	0.04537144
+12.5,	0,	-0.17121431
+1.5,	"XYZ",	"#VALUE!"
+"ABC",	3,	"#VALUE!"
+-3.5,	1,	"#NUM!"
+-0.735,	1,	"#NUM!"
+0,	1,	"#NUM!"
+1.5,	1,	-0.41230863
+2.5,	1,	0.14591814
+3.5,	1,	0.41018842
+-9,	2,	"#NUM!"
+-0.735,	2,	"#NUM!"
+0,	2,	"#NUM!"
+0.9,	2,	-1.94590960
+1.9,	2,	-0.66987868
+3.5,	2,	0.04537144
+4,	5,	-0.79585142