GPU Calc: Optimized COSH

AMLOEXT-256

Change-Id: I1e94b145943b88ba3c5cfd650577d8151d806550
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: Wei Wei <weiwei@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>

sc/source/core/opencl/op_math.cxx

@@ -52,6 +52,13 @@ void OpCos::GenSlidingWindowFunction(std::stringstream &ss,
     ss << "}";
 }
 
+void OpCosh::BinInlineFun(std::set<std::string>& decls,
+    std::set<std::string>& funs)
+{
+    decls.insert(local_coshDecl);
+    funs.insert(local_cosh);
+}
+
 void OpCosh::GenSlidingWindowFunction(std::stringstream &ss,
             const std::string sSymName, SubArguments &vSubArguments)
 {
@@ -76,7 +83,7 @@ void OpCosh::GenSlidingWindowFunction(std::stringstream &ss,
     ss<<"))\n";
     ss<<"        arg0 = 0;\n";
 #endif
-    ss << "    double tmp=cosh(arg0);\n";
+    ss << "    double tmp=local_cosh(arg0);\n";
     ss << "    return tmp;\n";
     ss << "}";
 }

sc/source/core/opencl/op_math.hxx

@@ -46,7 +46,7 @@ class OpCosh: public Normal
 public:
     virtual void GenSlidingWindowFunction(std::stringstream &ss,
             const std::string sSymName, SubArguments &vSubArguments);
-
+    virtual void BinInlineFun(std::set<std::string>& ,std::set<std::string>& );
     virtual std::string BinFuncName(void) const { return "Cosh"; }
 };
 class OpSinh: public Normal

sc/source/core/opencl/opinlinefun_math.hxx

@@ -47,6 +47,15 @@ std::string local_coth =
 "    return nVal;\n"
 "}\n";
 
+std::string local_coshDecl = "double local_cosh(double n);\n";
+std::string local_cosh =
+"double local_cosh(double n)\n"
+"{\n"
+"    double nVal = (exp(n) + exp(-n)) / 2;\n"
+"    return nVal;\n"
+"}\n";
+
+
 #endif //SC_OPENCL_OPINLINFUN_MATH
 
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