[/
  Copyright 2011 - 2020 John Maddock.
  Copyright 2013 - 2019 Paul A. Bristow.
  Copyright 2013 Christopher Kormanyos.

  Distributed under the Boost Software License, Version 1.0.
  (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt).
]

[section:complex_adaptor complex_adaptor]

   namespace boost{ namespace multiprecision{

   template <class Backend>
   struct complex_adaptor;

   }}

Class template `complex_adaptor` is designed to sit inbetween class `number` and an actual floating point backend,
in order to create a new complex number type.

It is the means by which we implement __cpp_complex and __complex128.

[endsect] [/section:complex_adaptor complex_adaptor]