resolve merge conflict

src/include/multi_array.h

@@ -50,8 +50,9 @@ namespace MultiArrayTools
 	
 	virtual const T* data() const override;
 	virtual T* data() override;
-
 	virtual std::vector<T>& vdata() { return mCont; }
+
+	operator T() const;	
 	
 	template <typename U, class... SRanges2>
 	friend class MultiArray;
@@ -59,6 +60,9 @@ namespace MultiArrayTools
     private:
 	std::vector<T> mCont;
     };
+
+    template <typename T>
+    using Scalar = MultiArray<T>;
     
 }
 
@@ -195,6 +199,13 @@ namespace MultiArrayTools
     {
 	return mCont.data();
     }
+
+    template <typename T, class... SRanges>
+    MultiArray<T,SRanges...>::operator T() const
+    {
+	static_assert( sizeof...(SRanges) == 0, "try to cast non-scalar type into scalar" );
+	return mCont[0];
+    }
 }
 
 #endif

src/include/multi_array_operation.h

@@ -248,6 +248,7 @@ namespace MultiArrayTools
 	typedef decltype(PackNum<sizeof...(Ops)-1>::template mkSteps<Ops...>(0, mOps)) ETuple;
 		
 	Operation(const Ops&... ops);
+	Operation(std::shared_ptr<OpFunction> ff, const Ops&... ops);
 	
 	template <class ET>
 	inline T get(ET pos) const;
@@ -522,7 +523,19 @@ namespace MultiArrayTools
     
     template <typename T, class OpFunction, class... Ops>
     Operation<T,OpFunction,Ops...>::Operation(const Ops&... ops) :
-	mOps(ops...) {}
+	mOps(ops...)
+    {
+	static_assert( FISSTATIC, "need function instance for non-static function" );
+    }
+
+    template <typename T, class OpFunction, class... Ops>
+    Operation<T,OpFunction,Ops...>::Operation(std::shared_ptr<OpFunction> ff,
+					      const Ops&... ops) :
+	mOps(ops...),
+	mF(ff)
+    {
+	static_assert( not FISSTATIC, "using instance of function supposed to be static" );
+    }
 
     template <typename T, class OpFunction, class... Ops>
     template <class ET>
@@ -530,7 +543,7 @@ namespace MultiArrayTools
     {
 	typedef std::tuple<Ops...> OpTuple;
 	return PackNum<sizeof...(Ops)-1>::
-	    template mkOpExpr<SIZE,T,ET,OpTuple,OpFunction>(pos, mOps);
+	    template mkOpExpr<SIZE,T,ET,OpTuple,OpFunction>(mF, pos, mOps);
     }
 
     template <typename T, class OpFunction, class... Ops>

src/include/pack_num.h

@@ -13,6 +13,26 @@
 
 namespace MultiArrayHelper
 {
+    template <bool ISSTATIC>
+    struct Application
+    {
+	template <class OpFunction, typename T, typename... Ts>
+	static inline T apply(std::shared_ptr<OpFunction> f, T a, Ts... as)
+	{
+	    return (*f)(a, as...);
+	}
+    };
+
+    template <>
+    struct Application<true>
+    {
+	template <class OpFunction, typename T, typename... Ts>
+	static inline T apply(std::shared_ptr<OpFunction> f, T a, Ts... as)
+	{
+	    return OpFunction::apply(a, as...);
+	}
+    };
+    
     
     template <size_t N>
     struct PackNum
@@ -41,13 +61,13 @@ namespace MultiArrayHelper
 	}
 
 	template <size_t LAST, typename T, class ETuple, class OpTuple, class OpFunction, typename... Args>
-	static inline T mkOpExpr(const ETuple& pos, const OpTuple& ops, const Args&... args)
+	static inline T mkOpExpr(std::shared_ptr<OpFunction> f, const ETuple& pos, const OpTuple& ops, const Args&... args)
 	{
 	    typedef typename std::remove_reference<decltype(std::get<N>(ops))>::type NextOpType;
 	    static_assert(LAST > NextOpType::SIZE, "inconsistent array positions");
 	    static constexpr size_t NEXT = LAST - NextOpType::SIZE;
 	    return PackNum<N-1>::template mkOpExpr<NEXT,T,ETuple,OpTuple,OpFunction,T,Args...>
-		( pos, ops, std::get<N>(ops).get(Getter<NEXT>::template getX<ETuple>( pos )), args...);
+		( f, pos, ops, std::get<N>(ops).get(Getter<NEXT>::template getX<ETuple>( pos )), args...);
 	}
 
 	template <class OpTuple, class Expr>
@@ -94,14 +114,15 @@ namespace MultiArrayHelper
 	{
 	    std::get<0>(out) = second.rootSteps( std::get<0>(siar) );
 	}
-
+	
 	template <size_t LAST, typename T, class ETuple, class OpTuple, class OpFunction, typename... Args>
-	static inline T mkOpExpr(const ETuple& pos, const OpTuple& ops, const Args&... args)
+	static inline T mkOpExpr(std::shared_ptr<OpFunction> f, const ETuple& pos, const OpTuple& ops, const Args&... args)
 	{
 	    typedef typename std::remove_reference<decltype(std::get<0>(ops))>::type NextOpType;
 	    static constexpr size_t NEXT = LAST - NextOpType::SIZE;
 	    static_assert(NEXT == 0, "inconsistent array positions");
-	    return OpFunction::apply(std::get<0>(ops).get(Getter<0>::template getX<ETuple>( pos )), args...);
+	    return Application<OpFunction::FISSTATIC>::apply(f, std::get<0>(ops).get(Getter<0>::template getX<ETuple>( pos )), args...);
+	    //return OpFunction::apply(std::get<0>(ops).get(Getter<0>::template getX<ETuple>( pos )), args...);
 	}
 
 	template <class OpTuple, class Expr>

src/include/ranges/anonymous_range.h

@@ -51,7 +51,12 @@ namespace MultiArrayTools
 	
 	virtual IndexType begin() const override;
 	virtual IndexType end() const override;
-		
+
+	std::shared_ptr<RangeBase> sub(size_t num) const;
+
+	template <class Range>
+	std::shared_ptr<Range> fullsub(size_t num) const;
+	
 	friend AnonymousRangeFactory;
 	
     protected:
@@ -118,6 +123,12 @@ namespace MultiArrayTools
 	//RPackNum<sizeof...(RangeTypes)-1>::getSize( rst );
     }
 
+    template <class Range>
+    std::shared_ptr<Range> AnonymousRange::fullsub(size_t num) const
+    {
+	return std::dynamic_pointer_cast<Range>( mOrig.at(num) );
+    }
+    
     /*****************
      *   Functions   *
      *****************/

src/lib/ranges/anonymous_range.cc

@@ -54,6 +54,11 @@ namespace MultiArrayTools
 	i = size();
 	return i;
     }
+
+    std::shared_ptr<RangeBase> AnonymousRange::sub(size_t num) const
+    {
+	return mOrig.at(num);
+    }
     
     /*****************
      *   Functions   *

src/tests/op_unit_test.cc

@@ -15,6 +15,7 @@ namespace {
 
     double xround(double arg)
     {
+	if(std::isnan(arg)) { return 0.; }
 	return roundf(arg * 100000.) / 100000.;
     }
     
@@ -265,6 +266,15 @@ namespace {
 
 	std::vector<double> mv1;
 	std::vector<double> mv2;
+
+	double vcontract(size_t i)
+	{
+	    double res = 0.;
+	    for(auto& x: mv2){
+		res += pow(mv1[i],x);
+	    }
+	    return res;
+	}
     };
 
     
@@ -276,6 +286,32 @@ namespace {
 	
 	EXPECT_EQ( xround( fma[ i.at( mkt(9.665, -0.0765) ) ] ), xround( pow(9.665, -0.0765) ) );
     }
+
+    TEST_F(MetaOp_Test, Operation)
+    {
+	FunctionalMultiArray<double,Pow<double>,SR,SR> fma(sr1ptr, sr2ptr);
+	MultiArray<double,SR> res( sr1ptr );
+
+	auto i1 = MAT::getIndex(sr1ptr);
+	auto i2 = MAT::getIndex(sr2ptr);
+	
+	res(i1) = fma(i1,i2).c(i2);
+
+	auto i = res.begin();
+	
+	EXPECT_EQ( xround( res[ i.at( 2.476 ) ] ), xround( vcontract(0) ) );
+	EXPECT_EQ( xround( res[ i.at( 9.665 ) ] ), xround( vcontract(1) ) );
+	EXPECT_EQ( xround( res[ i.at( 1.289 ) ] ), xround( vcontract(2) ) );
+	EXPECT_EQ( xround( res[ i.at( 2.89 ) ] ), xround( vcontract(3) ) );
+	EXPECT_EQ( xround( res[ i.at( 77.04 ) ] ), xround( vcontract(4) ) );
+	
+	EXPECT_EQ( xround( res[ i.at( -11.09 ) ] ), xround( vcontract(5) ) );
+	EXPECT_EQ( xround( res[ i.at( 100.4 ) ] ), xround( vcontract(6) ) );
+	EXPECT_EQ( xround( res[ i.at( 2.0 ) ] ), xround( vcontract(7) ) );
+	EXPECT_EQ( xround( res[ i.at( -26.5 ) ] ), xround( vcontract(8) ) );
+	EXPECT_EQ( xround( res[ i.at( -0.001 ) ] ), xround( vcontract(9) ) );
+    }
+
     
     TEST_F(OpTest_Spin, Contract)
     {