22 #ifndef _BLAZE_MATH_TYPETRAITS_ISEXPRESSION_H_
23 #define _BLAZE_MATH_TYPETRAITS_ISEXPRESSION_H_
30 #include <boost/type_traits/is_base_of.hpp>
60 template<
typename T >
61 struct IsExpressionHelper
64 enum { value = boost::is_base_of<Expression,T>::value && !boost::is_base_of<T,Expression>::value };
65 typedef typename SelectType<value,TrueType,FalseType>::Type Type;
83 template<
typename T >
89 enum { value = IsExpressionHelper<T>::value };
90 typedef typename IsExpressionHelper<T>::Type Type;