...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::icl::is_negative<icl::inplace_minus< Type >>
// In header: <boost/icl/functors.hpp> template<typename Type> struct is_negative<icl::inplace_minus< Type >> { // types typedef is_negative type; // public member functions BOOST_STATIC_CONSTANT(bool, value = true); };