Dynare++ / sylvester equation solver: first batch of modernizations

Making all in dynare++
Making all in sylv
Making all in cc
g++ -DPACKAGE_NAME=\"dynare\" -DPACKAGE_TARNAME=\"dynare\" -DPACKAGE_VERSION=\"4.6-unstable\" -DPACKAGE_STRING=\"dynare\ 4.6-unstable\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"dynare\" -DVERSION=\"4.6-unstable\" -DHAVE_BOOST=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_BOOST_GRAPH_ADJACENCY_LIST_HPP=1 -DHAVE_BOOST_ALGORITHM_STRING_TRIM_HPP=1 -DHAVE_BOOST_ALGORITHM_STRING_SPLIT_HPP=1 -DHAVE_BOOST_LEXICAL_CAST_HPP=1 -DBOOST_NO_HASH=/\*\*/ -DHAVE_LIBZ=1 -DHAVE_LIBHDF5=1 -DHAVE_BLAS=1 -DHAVE_LAPACK=1 -DHAVE_PTHREAD_PRIO_INHERIT=1 -DHAVE_PTHREAD=1 -DHAVE_MATLAB=1 -I.  -I../../../mex/sources  -Wall -Wno-parentheses -g -O2 -MT libsylv_a-BlockDiagonal.o -MD -MP -MF .deps/libsylv_a-BlockDiagonal.Tpo -c -o libsylv_a-BlockDiagonal.o `test -f 'BlockDiagonal.cc' || echo './'`BlockDiagonal.cc
In file included from BlockDiagonal.cc:5:
In file included from ./BlockDiagonal.hh:10:
In file included from ./QuasiTriangular.hh:8:
./Vector.hh:20:7: error: function definition does not declare parameters
  int len{0};
      ^
./Vector.hh:21:7: error: function definition does not declare parameters
  int s{1};
      ^
./Vector.hh:22:11: error: function definition does not declare parameters
  double *data{nullptr};
          ^
./Vector.hh:23:8: error: function definition does not declare parameters
  bool destroy{false};
       ^
./Vector.hh:25:14: warning: defaulted function definitions are a C++11 extension [-Wc++11-extensions]
  Vector() = default;
             ^
./Vector.hh:26:19: error: member initializer 'len' does not name a non-static data member or base class
  Vector(int l) : len(l),  data(new double[l]), destroy(true)
                  ^~~~~~
./Vector.hh:26:28: error: member initializer 'data' does not name a non-static data member or base class
  Vector(int l) : len(l),  data(new double[l]), destroy(true)
                           ^~~~~~~~~~~~~~~~~~~
./Vector.hh:26:49: error: member initializer 'destroy' does not name a non-static data member or base class
  Vector(int l) : len(l),  data(new double[l]), destroy(true)
                                                ^~~~~~~~~~~~~
./Vector.hh:29:23: error: member initializer 'len' does not name a non-static data member or base class
  Vector(Vector &v) : len(v.length()), s(v.skip()), data(v.base()) 
                      ^~~~~~~~~~~~~~~
./Vector.hh:29:40: error: member initializer 's' does not name a non-static data member or base class
  Vector(Vector &v) : len(v.length()), s(v.skip()), data(v.base()) 
                                       ^~~~~~~~~~~
./Vector.hh:29:53: error: member initializer 'data' does not name a non-static data member or base class
  Vector(Vector &v) : len(v.length()), s(v.skip()), data(v.base()) 
                                                    ^~~~~~~~~~~~~~
./Vector.hh:35:7: error: member initializer 'len' does not name a non-static data member or base class
    : len(l),  data(new double[len]), destroy(true)
      ^~~~~~
./Vector.hh:35:32: error: use of undeclared identifier 'len'
    : len(l),  data(new double[len]), destroy(true)
                               ^
./Vector.hh:35:39: error: member initializer 'destroy' does not name a non-static data member or base class
    : len(l),  data(new double[len]), destroy(true)
                                      ^~~~~~~~~~~~~
./Vector.hh:40:7: error: member initializer 'len' does not name a non-static data member or base class
    : len(l),  data(d) 
      ^~~~~~
./Vector.hh:40:16: error: member initializer 'data' does not name a non-static data member or base class
    : len(l),  data(d) 
               ^~~~~~~
./Vector.hh:44:7: error: member initializer 'len' does not name a non-static data member or base class
    : len(l), s(skip), data(d) 
      ^~~~~~
./Vector.hh:44:15: error: member initializer 's' does not name a non-static data member or base class
    : len(l), s(skip), data(d) 
              ^~~~~~~
./Vector.hh:44:24: error: member initializer 'data' does not name a non-static data member or base class
    : len(l), s(skip), data(d) 
                       ^~~~~~~
./Vector.hh:56:12: error: use of undeclared identifier 'data'
    return data[s*i];
           ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
1 warning and 20 errors generated.
make[3]: *** [libsylv_a-BlockDiagonal.o] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all-recursive] Error 1

cd dynare++/sylv/cc
g++ -std=gnu++14 -DPACKAGE_NAME=\"dynare\" -DPACKAGE_TARNAME=\"dynare\" -DPACKAGE_VERSION=\"4.6-unstable\" -DPACKAGE_STRING=\"dynare\ 4.6-unstable\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"dynare\" -DVERSION=\"4.6-unstable\" -DHAVE_BOOST=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_BOOST_GRAPH_ADJACENCY_LIST_HPP=1 -DHAVE_BOOST_ALGORITHM_STRING_TRIM_HPP=1 -DHAVE_BOOST_ALGORITHM_STRING_SPLIT_HPP=1 -DHAVE_BOOST_LEXICAL_CAST_HPP=1 -DBOOST_NO_HASH=/\*\*/ -DHAVE_LIBZ=1 -DHAVE_LIBHDF5=1 -DHAVE_BLAS=1 -DHAVE_LAPACK=1 -DHAVE_PTHREAD_PRIO_INHERIT=1 -DHAVE_PTHREAD=1 -DHAVE_MATLAB=1 -I.  -I../../../mex/sources  -Wall -Wno-parentheses -g -O2 -MT libsylv_a-BlockDiagonal.o -MD -MP -MF .deps/libsylv_a-BlockDiagonal.Tpo -c -o libsylv_a-BlockDiagonal.o `test -f 'BlockDiagonal.cc' || echo './'`BlockDiagonal.cc