Merge pull request #597 from boostorg/issue595

Update complex_adaptor to match precision requirements.

include/boost/multiprecision/complex_adaptor.hpp

@@ -192,6 +192,56 @@ struct complex_adaptor
       m_real.negate();
       m_imag.negate();
    }
+
+   //
+   // Default precision:
+   //
+   static BOOST_MP_CXX14_CONSTEXPR unsigned default_precision() noexcept
+   {
+      return Backend::default_precision();
+   }
+   static BOOST_MP_CXX14_CONSTEXPR void default_precision(unsigned digits10)
+   {
+      Backend::default_precision(digits10);
+      Backend::thread_default_precision(digits10);
+   }
+   static BOOST_MP_CXX14_CONSTEXPR unsigned thread_default_precision() noexcept
+   {
+      return Backend::thread_default_precision();
+   }
+   static BOOST_MP_CXX14_CONSTEXPR void thread_default_precision(unsigned digits10)
+   {
+      Backend::thread_default_precision(digits10);
+   }
+   BOOST_MP_CXX14_CONSTEXPR unsigned precision() const noexcept
+   {
+      return m_real.precision();
+   }
+   BOOST_MP_CXX14_CONSTEXPR void precision(unsigned digits10)
+   {
+      m_real.precision(digits10);
+      m_imag.precision(digits10);
+   }
+   //
+   // Variable precision options:
+   // 
+   static constexpr variable_precision_options default_variable_precision_options()noexcept
+   {
+      return Backend::default_variable_precision_options();
+   }
+   static constexpr variable_precision_options thread_default_variable_precision_options()noexcept
+   {
+      return Backend::thread_default_variable_precision_options();
+   }
+   static BOOST_MP_CXX14_CONSTEXPR void default_variable_precision_options(variable_precision_options opts)
+   {
+      Backend::default_variable_precision_options(opts);
+      Backend::thread_default_variable_precision_options(opts);
+   }
+   static BOOST_MP_CXX14_CONSTEXPR void thread_default_variable_precision_options(variable_precision_options opts)
+   {
+      Backend::thread_default_variable_precision_options(opts);
+   }
 };
 
 template <class Backend, class T>

test/Jamfile.v2

@@ -1234,6 +1234,7 @@ test-suite misc :
       [ run git_issue_540.cpp ]
       [ run git_issue_573.cpp : : : <toolset>msvc:<cxxflags>-sdl ]
       [ run git_issue_576.cpp : : : [ check-target-builds ../config//has_float128 : <define>TEST_FLOAT128 <source>quadmath : ] ]
+      [ run git_issue_595.cpp : : : [ check-target-builds ../config//has_mpfr : <source>gmp <source>mpfr : <build>no ] ]
       [ compile git_issue_98.cpp : 
          [ check-target-builds ../config//has_float128 : <define>TEST_FLOAT128 <source>quadmath : ]
          [ check-target-builds ../config//has_gmp : <define>TEST_GMP <source>gmp : ]

test/git_issue_595.cpp

@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////
+//  Copyright 2023 John Maddock. 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)
+
+#include <boost/multiprecision/mpfr.hpp>
+#include <boost/multiprecision/complex_adaptor.hpp>
+#include <boost/multiprecision/logged_adaptor.hpp>
+#include <boost/multiprecision/debug_adaptor.hpp>
+#include <iostream>
+#include "test.hpp"
+
+template <class T>
+void test()
+{
+   T val;
+   unsigned n = T::default_precision();
+   T::default_precision(n);
+   n = T::thread_default_precision();
+   T::thread_default_precision(n);
+   n = val.precision();
+   val.precision(n);
+}
+
+
+
+int main()
+{
+   using namespace boost::multiprecision;
+
+   test<mpfr_float>();
+
+   using c = number<complex_adaptor<mpfr_float::backend_type>, et_on>;
+
+   test<c>();
+
+   using l = number<logged_adaptor<mpfr_float::backend_type>, et_on>;
+
+   test<l>();
+
+   using d = number<debug_adaptor<mpfr_float::backend_type>, et_on>;
+
+   test<d>();
+
+   return boost::report_errors();
+}