GPU Calc: implemented LN

AMLOEXT-154 FIX

Change-Id: I5c00fed99996bc87c8ad0026ffbe4c1822e108d6
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>

sc/source/core/opencl/formulagroupcl.cxx

@@ -1192,6 +1192,10 @@ DynamicKernelSoPArguments::DynamicKernelSoPArguments(
                 mvSubArguments.push_back(SoPHelper(ts,
                          ft->Children[i], new OpGammaDist));
                 break;
+            case ocLn:
+                mvSubArguments.push_back(SoPHelper(ts,
+                         ft->Children[i],new OpLn));
+                break;
             case ocExternal:
                 if ( !(pChild->GetExternal().compareTo(OUString(
                     "com.sun.star.sheet.addin.Analysis.getEffect"))))

sc/source/core/opencl/op_math.cxx

@@ -607,6 +607,28 @@ void OpBitAnd::GenSlidingWindowFunction(std::stringstream &ss,
     ss << "    return (int)num1 & (int)num2;\n";
     ss << "}";
 }
+void OpLn::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{\n";
+    ss << "    int gid0=get_global_id(0);\n";
+    ss << "    int singleIndex =  gid0;\n";
+
+    GenTmpVariables(ss,vSubArguments);
+    CheckAllSubArgumentIsNan(ss,vSubArguments);
+
+    ss << "    double tmp=log1p(tmp0-1);\n";
+    ss << "    return tmp;\n";
+    ss << "}";
+}
 }}
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sc/source/core/opencl/op_math.hxx

@@ -153,6 +153,13 @@ public:
         virtual std::string GetBottom(void) { return "0.0"; }
     virtual std::string BinFuncName(void) const { return "ScBitAnd"; }
 };
+class OpLn: public CheckVariables
+{
+public:
+    virtual void GenSlidingWindowFunction(std::stringstream &ss,
+            const std::string sSymName, SubArguments &vSubArguments);
+    virtual std::string BinFuncName(void) const { return "Ln"; }
+};
 }}
 
 #endif