im com (slice)

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.8)
 
 project(multi_array)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -std=c++11 -Wpedantic -O3 -g")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -std=c++11 -Wpedantic -O3 -g -march=native")
 
 enable_testing()
 

src/include/mbase_def.h

@@ -51,6 +51,14 @@ namespace MultiArrayTools
     // multi_array_operation.h
     template <typename T, class Op, class IndexType>
     class Contraction;
+
+    // slice.h
+    template <typename T, class... SRanges>
+    class Slice;
+
+    // slice.h
+    template <typename T, class... SRanges>
+    class SliceDef;
 }
 
 #endif

src/include/pack_num.h

@@ -51,7 +51,7 @@ namespace MultiArrayHelper
 	}
 
 	template <class OpTuple, class Expr>
-	static auto mkLoop( const OpTuple& ot, Expr&& exp )
+	static auto mkLoop( const OpTuple& ot, Expr exp )
 	    -> decltype(std::get<N>(ot).loop( PackNum<N-1>::mkLoop(ot,exp) ))
 	{
 	    return std::get<N>(ot).loop( PackNum<N-1>::mkLoop(ot,exp) );
@@ -92,7 +92,7 @@ namespace MultiArrayHelper
 	}
 
 	template <class OpTuple, class Expr>
-	static auto mkLoop( const OpTuple& ot, Expr&& exp )
+	static auto mkLoop( const OpTuple& ot, Expr exp )
 	    -> decltype(std::get<0>(ot).loop( exp ))
 	{
 	    return std::get<0>(ot).loop( exp );

src/include/slice.h

@@ -35,12 +35,27 @@ namespace MultiArrayTools
 
 	template <class... MARanges>
 	auto define(const std::shared_ptr<typename SRanges::IType>&... inds)
-	    -> SliceDef<T,OperationRoot<T,MARanges...> >;
+	    -> SliceDef<T,MARanges...>;
 	
     private:
 	T* mData;
     };
 
+
+    template <typename T, class... SRanges>
+    class SliceDef
+    {
+    private:
+	SliceDef() = default;
+	
+    public:
+	SliceDef(Slice<T,SRanges...>& sl,
+		 const std::shared_ptr<typename SRanges::IndexType>&... inds);
+
+	template <class... ORanges>
+	SliceDef& operator=(OperationRoot<T,ORanges...>& op);
+    };
+    
 } // end namespace MultiArrayTools
 
 /* ========================= *
@@ -122,8 +137,14 @@ namespace MultiArrayTools
 	//i = std::get<sizeof...(SRanges)>(mBlockSizes);
 	return i.setData(data());
     }
+    /*
+    SliceDef<T,SRanges...>::
+    SliceDef(Slice<T,SRanges...>& sl,
+	     const std::shared_ptr<typename SRanges::IndexType>&... inds);
     
-    
+    template <class... ORanges>
+    SliceDef<T,SRanges...>& SliceDef<T,SRanges...>::operator=(OperationRoot<T,ORanges...>& op);
+    */
 
 } // end namespace MultiArrayTools
 

src/tests/op_perf_test.cc

@@ -174,16 +174,20 @@ namespace {
 		  << std::endl;
 	
 	std::vector<double> vres(4*4);
-
-	std::clock_t begin2 = std::clock();
-	for(size_t i = 0; i != 1000; ++i){
 	for(size_t d = 0; d != 4; ++d){
 	    for(size_t p = 0; p != 4; ++p){
 		const size_t tidx = d*4 + p;
 		vres[tidx] = 0.;
+	    }
+	}
+	std::clock_t begin2 = std::clock();
+	for(size_t i = 0; i != 1000; ++i){
 	    for(size_t a = 0; a != 4; ++a){
 		for(size_t b = 0; b != 4; ++b){
 		    for(size_t c = 0; c != 4; ++c){
+			for(size_t d = 0; d != 4; ++d){
+			    for(size_t p = 0; p != 4; ++p){
+				const size_t tidx = d*4 + p;
 				const size_t sidx = d*4*4*4*4*4*4*4 + a*5*4*4*4*4*4 + b*5*4*4*4 + + c*5*4  + p;
 				vres[tidx] += data[sidx];
 			    }