Function iszero

include/win/boost/multiprecision/cpp_dec_float.hpp:468–471

   bool isfinite BOOST_PREVENT_MACRO_SUBSTITUTION() const { return (fpclass == cpp_dec_float_finite); }

   bool iszero () const
   {
      return ((fpclass == cpp_dec_float_finite) && (data[0u] == 0u));
   }

   bool isone () const;
   bool isint () const;