Blaze 3.9
HasLGamma.h
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1//=================================================================================================
33//=================================================================================================
34
35#ifndef _BLAZE_MATH_TYPETRAITS_HASLGAMMA_H_
36#define _BLAZE_MATH_TYPETRAITS_HASLGAMMA_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 HasLGammaHelper
66 : public FalseType
67{};
69//*************************************************************************************************
70
71
72//*************************************************************************************************
77template< typename T >
78struct HasLGammaHelper< T, Void_t< decltype( lgamma( std::declval<T>() ) ) > >
79 : public TrueType
80{};
82//*************************************************************************************************
83
84
85//*************************************************************************************************
106template< typename T, typename = void >
108 : public HasLGammaHelper<T>
109{};
110//*************************************************************************************************
111
112
113//*************************************************************************************************
118template< typename T >
119struct HasLGamma< T, EnableIf_t< IsVector_v<T> > >
120 : public HasLGamma< typename T::ElementType >
121{};
123//*************************************************************************************************
124
125
126//*************************************************************************************************
131template< typename T >
132struct HasLGamma< T, EnableIf_t< IsMatrix_v<T> > >
133 : public HasLGamma< 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) lgamma(const DenseMatrix< MT, SO > &dm)
Computes the natural logarithm of the absolute value of the gamma function for each single element of...
Definition: DMatMapExpr.h:2016
constexpr bool HasLGamma_v
Auxiliary variable template for the HasLGamma type trait.
Definition: HasLGamma.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 lgamma() operation for the given data types.
Definition: HasLGamma.h:109
Header file for the Void type trait.