GPU Calc: implemented ATAN

AMLOEXT-144 FIX

Change-Id: Ib94a4fbdcdf928c9a943d5b57449e7335d82b016
Refactoring: fix compile warnning in op_statistical.cxx
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>

sc/source/core/opencl/formulagroupcl.cxx

@@ -1168,6 +1168,10 @@ DynamicKernelSoPArguments::DynamicKernelSoPArguments(
                 mvSubArguments.push_back(SoPHelper(ts,
                     ft->Children[i], new OpArcSinHyp));
                 break;
+            case ocArcTan:
+                mvSubArguments.push_back(SoPHelper(ts,
+                    ft->Children[i], new OpArcTan));
+                break;
             case ocExternal:
                 if ( !(pChild->GetExternal().compareTo(OUString(
                     "com.sun.star.sheet.addin.Analysis.getEffect"))))

sc/source/core/opencl/op_math.cxx

@@ -514,6 +514,33 @@ void OpArcSinHyp::GenSlidingWindowFunction(std::stringstream &ss,
     ss << "    return asinh(tmp);\n";
     ss << "}";
 }
+void OpArcTan::GenSlidingWindowFunction(std::stringstream &ss,
+    const std::string sSymName, SubArguments &vSubArguments)
+{
+    ss << "\ndouble " << sSymName;
+    ss << "_"<< BinFuncName() <<"(";
+    for (unsigned i = 0; i < vSubArguments.size(); i++)
+    {
+        if (i) ss << ",";
+        vSubArguments[i]->GenSlidingWindowDecl(ss);
+    }
+    ss << ") {\n";
+    ss << "    int gid0 = get_global_id(0);\n";
+    ss << "    double tmp = " << GetBottom() << ";\n";
+#ifdef ISNAN
+    FormulaToken *tmpCur0 = vSubArguments[0]->GetFormulaToken();
+    const formula::SingleVectorRefToken*tmpCurDVR0=
+        dynamic_cast<const formula::SingleVectorRefToken *>(tmpCur0);
+    ss << "    int buffer_len = " << tmpCurDVR0->GetArrayLength() << ";\n";
+    ss << "    if((gid0)>=buffer_len || isNan(";
+    ss << vSubArguments[0]->GenSlidingWindowDeclRef() << "))\n";
+    ss << "        tmp = " << GetBottom() << ";\n";
+    ss << "    else\n    ";
+#endif
+    ss << "    tmp = " << vSubArguments[0]->GenSlidingWindowDeclRef() << ";\n";
+    ss << "    return atan(tmp);\n";
+    ss << "}";
+}
 }}
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sc/source/core/opencl/op_math.hxx

@@ -132,6 +132,13 @@ public:
     virtual std::string GetBottom(void) { return "0.0"; }
     virtual std::string BinFuncName(void) const { return "ScASinH"; }
 };
+class OpArcTan:public Normal{
+public:
+    virtual void GenSlidingWindowFunction(std::stringstream &ss,
+        const std::string sSymName, SubArguments &vSubArguments);
+    virtual std::string GetBottom(void) { return "0.0"; }
+    virtual std::string BinFuncName(void) const { return "ScATan"; }
+};
 }}
 
 #endif

sc/source/core/opencl/op_statistical.cxx

@@ -939,6 +939,7 @@ void OpCritBinom::BinInlineFun(std::set<std::string>& decls,
     std::set<std::string>& funs)
 {
     decls.insert(MinDecl);
+    funs.insert("");
 }
 
 void OpCritBinom::GenSlidingWindowFunction(std::stringstream& ss,