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It is not yet possible to use typeinfo for float_128 on GCC: see GCC 43622

so this fails to link undefined reference to typeinfo for __float128

std::cout << typeid(boost::float128_t).name() << std::endl;

This prevent using the existing tests for Boost.Math distributions, (unless a few lines are commented out) and if a MACRO BOOST_MATH_INSTRUMENT controlling them is defined then some diagnostic displays in Boost.Math will not work.

However this is only used for display purposes and can be commented out until this is fixed.