Blaze 3.9
HasReal.h
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1//=================================================================================================
33//=================================================================================================
34
35#ifndef _BLAZE_MATH_TYPETRAITS_HASREAL_H_
36#define _BLAZE_MATH_TYPETRAITS_HASREAL_H_
37
38
39//*************************************************************************************************
40// Includes
41//*************************************************************************************************
42
43#include <utility>
46#include <blaze/util/EnableIf.h>
49
50
51namespace blaze {
52
53//=================================================================================================
54//
55// CLASS DEFINITION
56//
57//=================================================================================================
58
59//*************************************************************************************************
64template< typename T, typename = void >
65struct HasRealHelper
66 : public FalseType
67{};
69//*************************************************************************************************
70
71
72//*************************************************************************************************
77template< typename T >
78struct HasRealHelper< T, Void_t< decltype( real( std::declval<T>() ) ) > >
79 : public TrueType
80{};
82//*************************************************************************************************
83
84
85//*************************************************************************************************
106template< typename T, typename = void >
108 : public HasRealHelper<T>
109{};
110//*************************************************************************************************
111
112
113//*************************************************************************************************
118template< typename T >
119struct HasReal< T, EnableIf_t< IsVector_v<T> > >
120 : public HasReal< typename T::ElementType >
121{};
123//*************************************************************************************************
124
125
126//*************************************************************************************************
131template< typename T >
132struct HasReal< T, EnableIf_t< IsMatrix_v<T> > >
133 : public HasReal< typename T::ElementType >
134{};
136//*************************************************************************************************
137
138
139//*************************************************************************************************
152template< typename T >
154//*************************************************************************************************
155
156} // namespace blaze
157
158#endif
Header file for the EnableIf class template.
Header file for the IntegralConstant class template.
Header file for the IsMatrix type trait.
Header file for the IsVector type trait.
decltype(auto) real(const DenseMatrix< MT, SO > &dm)
Returns a matrix containing the real part of each single element of dm.
Definition: DMatMapExpr.h:1529
constexpr bool HasReal_v
Auxiliary variable template for the HasReal type trait.
Definition: HasReal.h:153
constexpr bool IsVector_v
Auxiliary variable template for the IsVector type trait.
Definition: IsVector.h:125
constexpr bool IsMatrix_v
Auxiliary variable template for the IsMatrix type trait.
Definition: IsMatrix.h:124
void Void_t
Compile time type check.
Definition: Void.h:64
BoolConstant< true > TrueType
Type traits base class.
Definition: IntegralConstant.h:132
BoolConstant< false > FalseType
Type/value traits base class.
Definition: IntegralConstant.h:121
typename EnableIf< Condition, T >::Type EnableIf_t
Auxiliary type for the EnableIf class template.
Definition: EnableIf.h:138
Availability of the real() operation for the given data types.
Definition: HasReal.h:109
Header file for the Void type trait.