IsImagExpr.h
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1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_TYPETRAITS_ISIMAGEXPR_H_
36 #define _BLAZE_MATH_TYPETRAITS_ISIMAGEXPR_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <boost/type_traits/is_base_of.hpp>
45 #include <blaze/util/FalseType.h>
46 #include <blaze/util/SelectType.h>
47 #include <blaze/util/TrueType.h>
48 
49 
50 namespace blaze {
51 
52 //=================================================================================================
53 //
54 // CLASS DEFINITION
55 //
56 //=================================================================================================
57 
58 //*************************************************************************************************
63 template< typename T >
64 struct IsImagExprHelper
65 {
66  //**********************************************************************************************
67  enum { value = boost::is_base_of<ImagExpr,T>::value && !boost::is_base_of<T,ImagExpr>::value };
68  typedef typename SelectType<value,TrueType,FalseType>::Type Type;
69  //**********************************************************************************************
70 };
72 //*************************************************************************************************
73 
74 
75 //*************************************************************************************************
87 template< typename T >
88 struct IsImagExpr : public IsImagExprHelper<T>::Type
89 {
90  public:
91  //**********************************************************************************************
93  enum { value = IsImagExprHelper<T>::value };
94  typedef typename IsImagExprHelper<T>::Type Type;
96  //**********************************************************************************************
97 };
98 //*************************************************************************************************
99 
100 } // namespace blaze
101 
102 #endif
Header file for the FalseType type/value trait base class.
Namespace of the Blaze C++ math library.
Definition: Blaze.h:57
Header file for the ImagExpr base class.
Header file for the SelectType class template.
Compile time check whether the given type is a imaginary part expression template.This type trait class tests whether or not the given type Type is a imaginary part expression template. In order to qualify as a valid imaginary part expression template, the given type has to derive (publicly or privately) from the ImagExpr base class. In case the given type is a valid imaginary part expression template, the value member enumeration is set to 1, the nested type definition Type is TrueType, and the class derives from TrueType. Otherwise value is set to 0, Type is FalseType, and the class derives from FalseType.
Definition: IsImagExpr.h:88
Header file for the TrueType type/value trait base class.