merge

unsupported/Eigen/CXX11/src/Tensor/README.md

@@ -1149,6 +1149,19 @@ are the smallest of the reduced values.
 Reduce a tensor using the prod() operator.  The resulting values
 are the product of the reduced values.
 
+### <Operation> all(const Dimensions& new_dims)
+### <Operation> all()
+Reduce a tensor using the all() operator.  Casts tensor to bool and then checks
+whether all elements are true.  Runs through all elements rather than
+short-circuiting, so may be significantly inefficient.
+
+### <Operation> any(const Dimensions& new_dims)
+### <Operation> any()
+Reduce a tensor using the any() operator.  Casts tensor to bool and then checks
+whether any element is true.  Runs through all elements rather than
+short-circuiting, so may be significantly inefficient.
+
+
 ### <Operation> reduce(const Dimensions& new_dims, const Reducer& reducer)
 
 Reduce a tensor using a user-defined reduction operator.  See ```SumReducer```

unsupported/Eigen/CXX11/src/Tensor/TensorBase.h

@@ -363,6 +363,32 @@ class TensorBase<Derived, ReadOnlyAccessors>
       return TensorReductionOp<internal::MinReducer<CoeffReturnType>, const DimensionList<Index, NumDimensions>, const Derived>(derived(), in_dims, internal::MinReducer<CoeffReturnType>());
     }
 
+    template <typename Dims> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
+    const TensorReductionOp<internal::AndReducer, const Dims, const TensorConversionOp<bool, const Derived> >
+    all(const Dims& dims) const {
+      return cast<bool>().reduce(dims, internal::AndReducer());
+    }
+
+    EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
+    const TensorReductionOp<internal::AndReducer, const DimensionList<Index, NumDimensions>, const TensorConversionOp<bool, const Derived> >
+    all() const {
+      DimensionList<Index, NumDimensions> in_dims;
+      return cast<bool>().reduce(in_dims, internal::AndReducer());
+    }
+
+    template <typename Dims> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
+    const TensorReductionOp<internal::OrReducer, const Dims, const TensorConversionOp<bool, const Derived> >
+    any(const Dims& dims) const {
+      return cast<bool>().reduce(dims, internal::OrReducer());
+    }
+
+    EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
+    const TensorReductionOp<internal::OrReducer, const DimensionList<Index, NumDimensions>, const TensorConversionOp<bool, const Derived> >
+    any() const {
+      DimensionList<Index, NumDimensions> in_dims;
+      return cast<bool>().reduce(in_dims, internal::OrReducer());
+    }
+
    EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
     const TensorTupleReducerOp<
       internal::ArgMaxTupleReducer<Tuple<Index, CoeffReturnType> >,

unsupported/Eigen/CXX11/src/Tensor/TensorConversion.h

@@ -124,8 +124,8 @@ class TensorConversionOp : public TensorBase<TensorConversionOp<TargetType, XprT
     typedef typename internal::traits<TensorConversionOp>::StorageKind StorageKind;
     typedef typename internal::traits<TensorConversionOp>::Index Index;
     typedef typename internal::nested<TensorConversionOp>::type Nested;
-    typedef typename XprType::CoeffReturnType CoeffReturnType;
-    typedef typename XprType::PacketReturnType PacketReturnType;
+    typedef Scalar CoeffReturnType;
+    typedef Packet PacketReturnType;
     typedef typename NumTraits<Scalar>::Real RealScalar;
 
     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorConversionOp(const XprType& xpr)

unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h

@@ -219,6 +219,33 @@ template <typename T> struct ProdReducer
 };
 
 
+struct AndReducer
+{
+  static const bool PacketAccess = false;
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void reduce(bool t, bool* accum) const {
+    *accum = *accum && t;
+  }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool initialize() const {
+    return true;
+  }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool finalize(bool accum) const {
+    return accum;
+  }
+};
+
+struct OrReducer {
+  static const bool PacketAccess = false;
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void reduce(bool t, bool* accum) const {
+    *accum = *accum || t;
+  }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool initialize() const {
+    return false;
+  }
+  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool finalize(bool accum) const {
+    return accum;
+  }
+};
+
 // Argmin/Argmax reducers
 template <typename T> struct ArgMaxTupleReducer
 {

unsupported/Eigen/CXX11/src/Tensor/TensorMacros.h

@@ -26,8 +26,17 @@
  *   void foo(){}
  */
 
+// SFINAE requires variadic templates
 #ifdef EIGEN_HAS_VARIADIC_TEMPLATES
-#define EIGEN_HAS_SFINAE
+  // SFINAE doesn't work for gcc <= 4.7
+  #ifdef EIGEN_COMP_GNUC
+    #if EIGEN_GNUC_AT_LEAST(4,8)
+      #define EIGEN_HAS_SFINAE
+    #endif
+  #else
+    #define EIGEN_HAS_SFINAE
+  #endif
+
 #endif
 
 #define EIGEN_SFINAE_ENABLE_IF( __condition__ ) \

unsupported/test/cxx11_tensor_reduction.cpp

@@ -180,6 +180,23 @@ static void test_simple_reductions() {
 
     VERIFY_IS_APPROX(mean1(0), mean2(0));
   }
+
+  {
+    Tensor<int, 1> ints(10);
+    std::iota(ints.data(), ints.data() + ints.dimension(0), 0);
+
+    TensorFixedSize<bool, Sizes<1> > all;
+    all = ints.all();
+    VERIFY(!all(0));
+    all = (ints >= ints.constant(0)).all();
+    VERIFY(all(0));
+
+    TensorFixedSize<bool, Sizes<1> > any;
+    any = (ints > ints.constant(10)).any();
+    VERIFY(!any(0));
+    any = (ints < ints.constant(1)).any();
+    VERIFY(any(0));
+  }
 }
 
 template <int DataLayout>