GPU Calc: unit test cases for COVAR

Turn  NO_FALLBACK_TO_SWINTERP on in  formulagroupcl.cxx for test

AMLOEXT-86 BUG

Change-Id: Ie35b4fe1efcdd21e8488ce560c30bd3fca6aa30c
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>

sc/qa/unit/opencl-test.cxx

@@ -238,6 +238,7 @@ public:
     void testStatisticalFormulaTInv();
     void testArrayFormulaSumXMY2();
     void testStatisticalFormulaStDevP();
+    void testStatisticalFormulaCovar();
     CPPUNIT_TEST_SUITE(ScOpenclTest);
     CPPUNIT_TEST(testSharedFormulaXLS);
     CPPUNIT_TEST(testFinacialFormula);
@@ -407,6 +408,7 @@ public:
     CPPUNIT_TEST(testStatisticalFormulaTInv);
     CPPUNIT_TEST(testArrayFormulaSumXMY2);
     CPPUNIT_TEST(testStatisticalFormulaStDevP);
+    CPPUNIT_TEST(testStatisticalFormulaCovar);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -1951,6 +1953,31 @@ void ScOpenclTest::testMathFormulaCosh()
     xDocSh->DoClose();
     xDocShRes->DoClose();
 }
+void ScOpenclTest::testStatisticalFormulaCovar()
+{
+    if (!detectOpenCLDevice())
+        return;
+
+    ScDocShellRef xDocSh = loadDoc("opencl/statistical/Covar.", XLS);
+    ScDocument* pDoc = xDocSh->GetDocument();
+    CPPUNIT_ASSERT(pDoc);
+    enableOpenCL();
+    pDoc->CalcAll();
+
+    ScDocShellRef xDocShRes = loadDoc("opencl/statistical/Covar.", XLS);
+    ScDocument* pDocRes = xDocShRes->GetDocument();
+    CPPUNIT_ASSERT(pDocRes);
+    // Check the results of formula cells in the shared formula range.
+    for (SCROW i = 0; i <= 16; ++i)
+    {
+        double fLibre = pDoc->GetValue(ScAddress(2,i,0));
+        double fExcel = pDocRes->GetValue(ScAddress(2,i,0));
+        CPPUNIT_ASSERT_DOUBLES_EQUAL(fExcel, fLibre, fabs(0.0001*fExcel));
+    }
+    xDocSh->DoClose();
+    xDocShRes->DoClose();
+}
+
 //[AMLOEXT-87]
 void ScOpenclTest::testStatisticalFormulaKurt()
 {

sc/source/core/tool/token.cxx

@@ -1469,6 +1469,7 @@ void ScTokenArray::CheckToken( const FormulaToken& r )
             case ocTInv:
             case ocSumXMY2:
             case ocStDevP:
+            case ocCovar:
             // Don't change the state.
             break;
             default: