I try to use Boost Static Assert to define a template parameter only for double & floats. I use the call BOOST_STATIC_ASSERT( !boost::is_integral<T>::value )

I get in a class the error: error: no member named 'is_integral' in namespace 'boost' BOOST_STATIC_ASSERT( !boost::is_integral<T>::value )

My question is, how can I check the template parameter so that only floating-point types are allowed? How can I avoid the error?

Did you #include ? If you wish to restrict the function to floating point types you may also which to use enable_if: template <class T> typename boost::enable_if::type my_function(T val) { // body here. } HTH, John.