Blaze  3.6
HasExp.h
Go to the documentation of this file.
1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_TYPETRAITS_HASEXP_H_
36 #define _BLAZE_MATH_TYPETRAITS_HASEXP_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <utility>
46 #include <blaze/util/EnableIf.h>
49 
50 
51 namespace blaze {
52 
53 //=================================================================================================
54 //
55 // CLASS DEFINITION
56 //
57 //=================================================================================================
58 
59 //*************************************************************************************************
64 template< typename T, typename = void >
65 struct HasExpHelper
66  : public FalseType
67 {};
69 //*************************************************************************************************
70 
71 
72 //*************************************************************************************************
77 template< typename T >
78 struct HasExpHelper< T, Void_t< decltype( exp( std::declval<T>() ) ) > >
79  : public TrueType
80 {};
82 //*************************************************************************************************
83 
84 
85 //*************************************************************************************************
106 template< typename T, typename = void >
107 struct HasExp
108  : public HasExpHelper<T>
109 {};
110 //*************************************************************************************************
111 
112 
113 //*************************************************************************************************
118 template< typename T >
119 struct HasExp< T, EnableIf_t< IsVector_v<T> > >
120  : public HasExp< typename T::ElementType >
121 {};
123 //*************************************************************************************************
124 
125 
126 //*************************************************************************************************
131 template< typename T >
132 struct HasExp< T, EnableIf_t< IsMatrix_v<T> > >
133  : public HasExp< typename T::ElementType >
134 {};
136 //*************************************************************************************************
137 
138 
139 //*************************************************************************************************
152 template< typename T >
153 constexpr bool HasExp_v = HasExp<T>::value;
154 //*************************************************************************************************
155 
156 } // namespace blaze
157 
158 #endif
BoolConstant< false > FalseType
Type/value traits base class.The FalseType class is used as base class for type traits and value trai...
Definition: IntegralConstant.h:121
Header file for the Void type trait.
constexpr bool IsMatrix_v
Auxiliary variable template for the IsMatrix type trait.The IsMatrix_v variable template provides a c...
Definition: IsMatrix.h:138
Availability of the exp() operation for the given data types.This type trait provides the information...
Definition: HasExp.h:107
void Void_t
Compile time type check.This type trait maps an arbitrary sequence of types to the type void....
Definition: Void.h:64
BoolConstant< true > TrueType
Type traits base class.The TrueType class is used as base class for type traits and value traits that...
Definition: IntegralConstant.h:132
Header file for the IsMatrix type trait.
typename EnableIf< Condition, T >::Type EnableIf_t
Auxiliary type for the EnableIf class template.The EnableIf_t alias declaration provides a convenient...
Definition: EnableIf.h:138
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Header file for the IsVector type trait.
decltype(auto) exp(const DenseMatrix< MT, SO > &dm)
Computes for each single element of the dense matrix dm.
Definition: DMatMapExpr.h:1632
Header file for the EnableIf class template.
constexpr bool IsVector_v
Auxiliary variable template for the IsVector type trait.The IsVector_v variable template provides a c...
Definition: IsVector.h:139
constexpr bool HasExp_v
Auxiliary variable template for the HasExp type trait.The HasExp_v variable template provides a conve...
Definition: HasExp.h:153
Header file for the IntegralConstant class template.