--- /dev/null
+/**
+ * @page changes_between_7_1_and_7_2 Changes between Version 7.1 and 7.2
+
+<p>
+This is the list of changes made between the release of
+deal.II version 7.1.0 and that of 7.2.0.
+All entries are signed with the names of the author.
+</p>
+
+
+
+<!-- ----------- INCOMPATIBILITIES ----------------- -->
+
+<a name="incompatible"></a>
+<h3 style="color:red">Incompatibilities</h3>
+
+<p style="color:red">
+Following are a few modifications to the library that unfortunately
+are incompatible with previous versions of the library, but which we
+deem necessary for the future maintainability of the
+library. Unfortunately, some of these changes will require
+modifications to application programs. We apologize for the
+inconvenience this causes.
+</p>
+
+<ol>
+<li> Changed/fixed: Several operations on Trilinos vectors that change the
+elements of these vectors were allowed accidentally for vectors that have
+ghost elements. This is a source of errors because a change on one
+MPI process will not show up on a different processor. Consequently, we
+intended to disallow all functions that modify vectors with ghost elements
+but this was not enforced for all of these functions. This is now fixed
+but it may lead to errors if your code relied on the existing behavior. The
+way to work around this is to only ever modify fully distributed vectors,
+and then copy it into a vector with ghost elements.
+<br>
+(Wolfgang Bangerth, 2012/08/06)
+
+<li> Changed: The argument material_id of the estimate-functions of
+the KellyErrorEstimator class is now of type types::material_id
+with default value numbers::invalid_material_id, instead of type
+unsigned int with default value numbers::invalid_unsigned_int. This
+should not make a difference to most users unless you specified the
+argument's default value by hand.
+<br>
+(Wolfgang Bangerth, Christian Goll 2012/02/27)
+
+<li>
+The member functions Triangulation::set_boundary and
+Triangulation::get_boundary now take a types::boundary_id instead of
+an unsigned int as argument. This now matches the actual data type
+used to store boundary indicators internally.
+<br>
+(Wolfgang Bangerth, Christian Goll 2012/02/27)
+</ol>
+
+
+<!-- ----------- GENERAL IMPROVEMENTS ----------------- -->
+
+<a name="general"></a>
+<h3>General</h3>
+
+
+<ol>
+<li>
+New: We now support parallel output using HDF5/xdmf.
+<br>
+(Eric Heien, Timo Heister, 2012/08/28)
+
+<li>
+New: We are now compatible with Trilinos 10.4.2, 10.8.5, and 10.12.2. See the
+readme for more information.
+<br>
+(Timo Heister, 2012/08/24)
+
+<li>
+Changed: To make the naming of types defined in namespace types
+consistent, we have renamed types::subdomain_id_t to
+types::subdomain_id. The old name has been retained as a typedef
+but is now deprecated.
+<br>
+(Wolfgang Bangerth, 2012/08/22)
+
+<li>
+Changed: Unify the concept of compress() for all linear algebra
+objects. Introduce type VectorOperation to decide between
+add and insert. Implement also for serial vectors. Note:
+this breaks distributed::vector::compress(bool). See
+@ref GlossCompress for more information.
+<br>
+(Timo Heister, 2012/08/13)
+
+<li>
+Changed: Support for the METIS 4.x has been replaced with support for
+METIS 5.x. Use <code>--with-metis=path/to/metis</code> to configure
+with METIS 5.x.
+<br>
+(Stefano Zampini, Toby D. Young 2012/08/13)
+
+<li>
+Changed: numerics/vectors.h is now called numerics/vector_tools.h and
+numerics/matrices.h is now called numerics/matrix_tools.h The old files are
+deprecated.
+<br>
+(Timo Heister 2012/08/09)
+
+<li>
+New: officially added support for clang 3.1 or newer.
+<br>
+(Timo Heister and Wolfgang Bangerth, 2012/08/07)
+
+<li>
+Changed: PETSc linking now prefers to use the libpetsc.so generated
+by PETSc starting from version 3.1+. This fixes the problem
+of linker errors on recent gcc/ubuntu versions.
+<br>
+(Timo Heister, 2012/08/07)
+
+<li>
+Fixed: On some 64-bit systems, we build deal.II with the <code>-m64</code>
+flag but forgot to build UMFPACK with this flag as well, leading to
+linker errors. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2012/07/31)
+
+Fixed: The Intel compiler, when using MPI, wants that <code>mpi.h</code>
+is included before header files like <code>stdio.h</code>. This can't
+be ensured in general because the inclusion might be indirectly, but
+we now work around the problem in other ways.
+<br>
+(Timo Heister, Wolfgang Bangerth, Michael Thomadakis, 2012/07/26)
+
+<li>
+Fixed: On some systems, the p4est library we use for distributed
+parallel computations installs its libraries into a <code>lib64/</code>
+directory instead of the usual <code>lib/</code>. deal.II can now deal
+with this.
+<br>
+(Wolfgang Bangerth, 2012/07/25)
+
+<li>
+New: step-43 is an extension of step-21 that shows efficient methods
+to solve multi-phase flow.
+<br>
+(Chih-Che Chueh, Wolfgang Bangerth, 2012/06/06)
+
+<li>
+New: step-15 has been replaced by a program that demonstrates the
+solution of nonlinear problem (the minimal surface equation) using
+Newton's method.
+<br>
+(Sven Wetterauer, 2012/06/03)
+
+<li>
+New: step-48 demonstrates the solution of a nonlinear wave equation
+with an explicit time stepping method. The usage of Gauss-Lobatto
+elements gives diagonal mass matrices, which obviates the solution of
+linear systems of equations. The nonlinear right hand side is
+evaluated with the matrix-free framework.
+<br>
+(Katharina Kormann and Martin Kronbichler, 2012/05/05)
+
+<li>
+New: step-37 shows how the matrix-free framework can be utilized to
+efficiently solve the Poisson equation without building global
+matrices. It combines fast operator evaluation with a multigrid solver
+based on polynomial Chebyshev smoother.
+<br>
+(Katharina Kormann and Martin Kronbichler, 2012/05/05)
+
+<li>
+New: A new matrix-free interface has been implemented. The framework
+is parallelized with MPI, TBB, and explicit vectorization instructions
+(new data type VectorizedArray). The class MatrixFree caches
+cell-based data in an efficient way. Common operations can be
+implemented using the FEEvaluation class.
+<br>
+(Katharina Kormann and Martin Kronbichler, 2012/05/05)
+
+<li>
+New: step-44 demonstrates one approach to modeling large
+deformations of nearly-incompressible elastic solids. The
+elastic response is governed by a non-linear, hyperelastic
+free-energy function. The geometrical response is also
+nonlinear, i.e., the program considers finite deformations.
+<br>
+(Andrew McBride and Jean-Paul Pelteret, 2012/04/25)
+
+<li>
+New: step-41 demonstrates solving the obstacle problem,
+a variational inequality.
+<br>
+(Joerg Frohne, 2012/04/22)
+
+<li>
+Changed: The version of BOOST we ship with deal.II has been upgraded
+to 1.49.0.
+<br>
+(Martin Kronbichler, 2012/04/07)
+
+<li>
+New: We have added a brief section to the step-12 tutorial programs that
+compares the DG solution computed there with one that one would obtain by
+using a continuous finite element.
+<br>
+(Wolfgang Bangerth, 2012/03/25)
+
+<li>
+New: Added support for codimension 2, i.e. for dim-dimensional objects
+embedded into spacedim=dim+2 dimensional space.
+<br>
+(Sebastian Pauletti, 2012/03/02)
+
+<li> Changed: Material and Boundary indicators have been both of the
+type unsigned char. Throughout the library, we changed their datatype
+to <code>types::material_id</code>
+resp. <code>types::boundary_id</code>, both typedefs of unsigned
+char. Internal faces are now characterized by
+numbers::internal_face_boundary_id(<code>=static_cast@<types::boundary_id@>(-1)</code>)
+instead of 255, so we get rid of that mysterious number in the source
+code. Material_ids are also assumed to lie in the range from 0 to
+numbers::invalid_material_id-1 (where <code>numbers::invalid_material_id =
+static_cast<types::material_id>(-1)</code>). With this change, it is now
+much easier to extend the range of boundary or material ids, if
+needed.
+<br>
+(Christian Goll 2012/02/27)
+
+<li> New: Functions like FEValues::get_function_values have long been
+able to extract values from pretty much any vector kind given to it (e.g.
+of kind Vector, BlockVector, PETScWrappers::Vector, etc). The list of
+allowed "vector" types now also includes IndexSet, which is interpreted
+as a vector of elements that are either zero or one, depending on whether
+an index is in the IndexSet or not.
+<br>
+As a consequence of this, the DataOut::add_data_vector functions now also
+work for such types of vectors, a use demonstrated in step-41.
+<br>
+(Wolfgang Bangerth, 2012/02/14)
+
+<li> New: It has long been a nuisance that the deal.II vector classes
+could only be accessed using <code>operator()</code> whereas the C++
+<code>std::vector</code> class required <code>operator[]</code>. This
+diminished the usefulness of template code. Historically, the reason
+was that the deal.II vector classes should use the same operator as
+the matrix classes, and C++ does not allow to use <code>operator[]</code>
+for matrices since this operator can only take a single argument.
+<br>
+In any case, all deal.II vector classes now support both kinds of
+access operators interchangeably.
+<br>
+(Wolfgang Bangerth, 2012/02/12)
+
+<li> Fixed: Linking shared libraries on PowerPC systems (e.g. on
+BlueGene systems) failed due to a miscommunication between compiler
+and linker. This is now worked around.
+<br>
+(Aron Ahmedia, Wolfgang Bangerth, 2012/02/06)
+
+<li> New: There is now a distributed deal.II vector class
+parallel::distributed::Vector that can be used with MPI. The
+vector is based on a contiguous locally owned range and allows easy
+access of ghost entries from other processors. The vector interface is
+very similar to the non-distributed class Vector<Number>.
+<br>
+(Katharina Kormann, Martin Kronbichler, 2012/01/25)
+
+<li> Fixed: The <code>common/scripts/make_dependencies</code> program
+now behaves like the C++ compiler when
+searching include paths for <code># include "..."</code> directives.
+<br>
+(Timo Heister, 2012/01/10)
+
+<li> Fixed: The Intel compiler complains that it can't copy Trilinos vector
+reference objects, preventing the compiling of step-32. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/11/09)
+
+<li> Fixed: Intel ICC 12.1 gets into trouble with BOOST because BOOST
+believes that the compiler supports C++0x but one then still has to
+specify the corresponding flag on the command line to avoid compiler
+errors. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/11/06)
+
+<li> Fixed: On some systems, <code>mpiCC</code> turns out to alias the
+C compiler, not the C++ compiler as expected. Consequently, try to use
+<code>mpic++</code> or <code>mpicxx</code> before <code>mpiCC</code> as
+these should really be unambiguous.
+<br>
+(Wolfgang Bangerth, 2011/11/05)
+
+<li> Fixed: Intel's ICC compiler identifies itself as <code>icpc version
+12.1.0 (gcc version 4.2.1 compatibility)</code> which we mistook as being
+GCC version 4.2. The same is true for the Intel C compiler. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/11/05)
+
+<li> Fixed: deal.II could not be compiled with gcc 4.6.1 when MPI is
+enabled due to a missing include file in file
+<code>source/base/utilities.cc</code>. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/10/25)
+</ol>
+
+
+<!-- ----------- SPECIFIC IMPROVEMENTS ----------------- -->
+
+<a name="specific"></a>
+<h3>Specific improvements</h3>
+
+<ol>
+<li> Changed: To support Trilinos version 10.12.x we need to cache the
+result of has_ghost_elements() in parallel vectors at construction time
+of the vector. Starting from 10.12 Trilinos will communicate in this
+call, which therefore only works if called from all CPUs.
+<br>
+(Timo Heister, 2012/08/22)
+
+<li> New: The copy constructor of FullMatrix from IdentityMatrix
+used to be explicit, but that didn't appear to be necessary in hindsight.
+Consequently, it is now a regular copy constructor.
+<br>
+(Wolfgang Bangerth, 2012/08/14)
+
+<li> New: The Patterns::Map pattern allows to describe maps from keys
+to values in input files.
+<br>
+(Wolfgang Bangerth, 2012/08/01)
+
+<li> Fixed: DoFTools::make_zero_boundary_constraints now also works for parallel distributed triangulations.
+<br>
+(Wolfgang Bangerth, 2012/07/24)
+
+<li> Fixed: GridTools::find_active_cell_around_point() works now also if the cell in which the point we look for lies is not adjacent to the closest vertex of p. The tests bits/find_cell_8 and _9 illustrate this.
+<br>
+(Wolfgang Bangerth, Christian Goll 2012/07/20)
+
+<li> Fixed: Using the SolutionTransfer class with hp::DoFHandler
+and on meshes where some cells are associated with a FE_Nothing element
+could result in an error. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2012/06/29)
+
+<li> Fixed: The MappingQ1::transform_real_to_unit_cell function as
+well as the equivalent ones in derived classes sometimes get into
+trouble if they are asked to compute the preimage of this point
+in reference cell coordinates. This is because for points outside
+the reference cell, the mapping from unit to real cell is not
+necessarily invertible, and consequently the Newton iteration to
+find the preimage did not always converge, leading to an exception.
+While this is not entirely wrong (we could, after all, not compute
+the desired quantity), not all callers of this function were prepared
+to accept this result -- in particular, the function
+CellAccessor<3>::point_inside should have really just returned false
+in such cases but instead let the exception so generated propagate
+through. This should now be fixed.
+<br>
+(Wolfgang Bangerth, Eric Heien, Sebastian Pauletti, 2012/06/27)
+
+<li> Fixed: The function VectorTools::compute_no_normal_flux_constraints had
+a bug that led to an exception whenever we were computing constraints for
+vector fields located on edges shared between two faces of a 3d cell if those
+faces were not parallel to the axes of the coordinate system. This is now fixed.
+<br>
+(Wolfgang Bangerth, Jennifer Worthen, 2012/06/27)
+
+<li>
+Fixed: Due to an apparent bug in autoconf, it was not possible to
+override the <code>F77</code> environment variable to select anything
+else than gfortran. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2012/06/08)
+
+<li> Fixed: TrilinosWrappers::VectorBase::swap() is now working as expected. (thanks Uwe Köcher)
+<br>
+(Timo Heister 2012/07/03)
+
+<li> Fixed: Some instantiations for
+DerivativeApproximation::approximate_derivative_tensor() were missing.
+<br>
+(Timo Heister 2012/06/07)
+
+<li> New: The finite element type FE_DGQArbitraryNodes is now
+working also in codimension one spaces.
+<br>
+(Luca Heltai, Andrea Mola 2012/06/06)
+
+<li> Fixed: Computing the $W^{1,\infty}$ norm and seminorm in
+VectorTools::integrate_difference was not implemented. This is now
+fixed.
+<br>
+(Wolfgang Bangerth 2012/06/02)
+
+<li> Fixed: A problem in MappingQ::transform_real_to_unit_cell
+that sometimes led the algorithm in this function to abort.
+<br>
+(Wolfgang Bangerth 2012/05/30)
+
+<li> New: The function DataOutInterface::write_pvd_record can be used
+to provide Paraview with metadata that describes which time in a
+simulation a particular output file corresponds to.
+<br>
+(Marco Engelhard 2012/05/30)
+
+<li> Fixed: A bug in 3d with hanging nodes in GridTools::find_cells_adjacent_to_vertex()
+that caused find_active_cell_around_point() to fail in those cases.
+<br>
+(Timo Heister, Wolfgang Bangerth 2012/05/30)
+
+<li> New: DoFTools::make_periodicity_constraints implemented which
+inserts algebraic constraints due to periodic boundary conditions
+into a ConstraintMatrix.
+<br>
+(Matthias Maier, 2012/05/22)
+
+<li> New: The GridIn::read_unv function can now read meshes generated
+by the Salome framework, see http://www.salome-platform.org/ .
+<br>
+(Valentin Zingan, 2012/04/27)
+
+<li> New: There is now a second DoFTools::map_dofs_to_support_points
+function that also works for parallel::distributed::Triangulation
+triangulations.
+<br>
+(Wolfgang Bangerth, 2012/04/26)
+
+<li> New: There is now a second DoFTools::extract_boundary_dofs
+function that also works for parallel::distributed::Triangulation
+triangulations.
+<br>
+(Wolfgang Bangerth, 2012/04/26)
+
+<li> New: The FullMatrix::extract_submatrix_from, FullMatrix::scatter_matrix_to,
+FullMatrix::set functions are new.
+<br>
+(Andrew McBride, Jean Paul Pelteret, Wolfgang Bangerth, 2012/04/24)
+
+<li> Fixed:
+The method FEValues<dim>::inverse_jacobian() previously returned the transpose of the
+inverse Jacobians instead of just the inverse Jacobian as documented. This is now fixed.
+<br>
+(Sebastian Pauletti, Katharina Kormann, Martin Kronbichler, 2012/03/11)
+
+<li> Extended:
+SolutionTransfer is now also able to transfer solutions between hp::DoFHandler where
+the finite element index changes during refinement.
+<br>
+(Katharina Kormann, Martin Kronbichler, 2012/03/10)
+
+<li> Changed:
+A new method to determine an initial guess for the Newton method was coded
+in MappingQ::transform_real_to_unit_cell.
+The code in transform_real_to_unit_cell was cleaned a little bit and a new code
+for the @<2,3@> case was added.
+<br>
+(Sebastian Pauletti, 2012/03/02)
+
+<li> Changed:
+In the context of codim@>0, Mapping::transform would require different inputs
+depending on the mapping type.
+For mapping_covariant, mapping_contravariant the input is DerivativeForm<1, dim, spacedim>
+but for mapping_covariant_gradient, mapping_contravariant_gradient the input is Tensor<2,dim>.
+<br>
+(Sebastian Pauletti, 2012/03/02)
+
+<li> New:
+A new class DerivativeForm was added.
+This class is supposed to represent the derivatives of a mapping.
+<br>
+(Sebastian Pauletti, 2012/03/02)
+
+<li> Fixed: TrilinosWrappers::Vector::all_zero() in parallel.
+<br>
+(Timo Heister, Jörg Frohne, 2012/03/06)
+
+<li> New: GridGenerator::quarter_hyper_shell() in 3d.
+<br>
+(Thomas Geenen, 2012/03/05)
+
+<li> New: DataOut::write_vtu_in_parallel(). This routine uses MPI I/O to write
+a big vtu file in parallel.
+<br>
+(Timo Heister, 2012/02/29)
+
+<li> Fixed: parallel::distributed::Triangulation::clear() forgot
+to update the number cache of this class, leading to wrong results
+when calling functions like
+parallel::distributed::Triangulation::n_global_active_cells();
+<br>
+(Wolfgang Bangerth, 2012/02/20)
+
+<li> Improved: FEFieldFunction allows now for the computation of Laplacians.
+<br>
+(Christian Goll, 2012/02/16)
+
+<li> New: The function IndexSet::fill_binary_vector creates a numerical
+representation of an IndexSet containing zeros and ones.
+<br>
+(Wolfgang Bangerth, 2012/02/12)
+
+<li> New: The function IndexSet::clear resets an index set to be empty.
+<br>
+(Wolfgang Bangerth, 2012/02/12)
+
+<li> New: There are now global functions l1_norm() and linfty_norm() that compute
+the respective norms of a rank-2 tensor.
+<br>
+(Wolfgang Bangerth, 2012/02/08)
+
+<li> New: VectorTools::interpolate_to_different_mesh implemented which interpolates between
+ DoFHandlers with different triangulations based on a common coarse grid.
+<br>
+(Matthias Maier, 2012/02/08)
+
+<li> Improved: DoFTools::map_dofs_to_support_points() now also works within the hp framework.
+<br>
+(Christian Goll, 2012/02/02)
+
+<li> Improved: There is now a constructor for FESystem that allows to
+create collections of finite elements of arbitrary length.
+<br>
+(Jason Sheldon, 2012/01/27)
+
+<li> Improved: VectorTools::point_value() now also works within the hp framework.
+<br>
+(Christian Goll, 2012/01/26)
+
+<li> Fixed: GridTools::find_active_cell_around_point() for the hp-case works now also with MappingCollections containing only one mapping, as is the standard case in other functions using hp.
+<br>
+(Christian Goll, 2012/01/26)
+
+<li> Fixed: parallel::distributed::refine_and_coarsen_fixed_fraction()
+contained a rounding bug that often produced wrong results.
+<br>
+(Timo Heister, 2012/01/24)
+
+<li> Improved: Utilities::break_text_into_lines now also splits the string at '\\n'.
+<br>
+(Timo Heister, 2012/01/17)
+
+<li> Fixed: When <code>./configure</code> does not detect the presence
+of <code>zlib</code>, writing output in VTU format failed to produce
+a valid output file.
+<br>
+(Timo Heister, 2012/01/03)
+
+<li> Improved: <code>PETScWrappers::SolverXXX</code> class was
+restricted to using default solver options for the KSP only. It is now
+possible to override those by using PETSc command-line options
+<code>-ksp_*</code>; giving greater flexibility in controlling PETSc
+solvers. (See the class's documentation).
+<br>
+(Vijay S. Mahadevan, 2011/12/22)
+
+<li> New: The GridIn class now also reads the GMSH format 2.2 as written by
+GMSH 2.5.
+<br>
+(Vijay S. Mahadevan, Wolfgang Bangerth, 2011/12/19)
+
+<li> Improved: The GridRefinement::refine_and_coarsen_optimize function
+assumed that the expected convergence order was 2. It has now gotten an
+argument by which the user can prescribe a different value. A bug has also
+been fixed in which the function incorrectly assumed in its algorithm that
+the mesh was two-dimensional.
+<br>
+(Christian Goll, 2011/12/16)
+
+<li> Fixed: Restriction and prolongation didn't work for elements of
+kind FE_Nothing. Consequently, many other parts of the library also
+didn't work, such as the SolutionTransfer class. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/12/15)
+
+<li> Fixed: The DerivativeApproximation class now works for distributed computations.
+<br>
+(Timo Heister, 2011/12/15)
+
+<li> Changed: The ExcMessage exception class took an argument of
+type <code>char*</code> that was displayed when the exception
+was raised. However, character pointers are awkward to work with
+because (i) they can not easily be composed to contain things like
+file names that are only known at run-time, and (ii) the string
+pointed to by the pointer had to live longer than the local expression
+in which the exception is generated when using the AssertThrow macro
+(because, when we create an exception, the exception object is passed
+up the call stack until we find a catch-clause; at that time, however,
+the scope in which the exception object was created has long been left).
+This restriction made it impossible to construct the message using std::string
+and then just do something like <code>(std::string("file: ")+filename).c_str()</code>.
+<br>
+To remedy this flaw, the type of the argument to ExcMessage has been
+changed to std::string since objects of this type are readily copyable
+and therefore live long enough.
+<br>
+(Wolfgang Bangerth, 2011/12/14)
+
+<li> New: Setting up a class derived from DataPostprocessor required some
+pretty mechanical steps in which one has to overload four member functions.
+For common cases where a postprocessor only computes a single scalar or
+a single vector, this is tedious and unnecessary. For these cases, the
+new classes DataPostprocessorScalar and DataPostprocessorVector provide
+short cuts that make life simpler.
+<br>
+(Wolfgang Bangerth, 2011/12/14)
+
+<li> Changed: The DataPostprocessor class previously required users of this
+class to overload DataPostprocessor::get_names(),
+DataPostprocessor::get_data_component_interpretation()
+and DataPostprocessor::n_output_variables(). The latter function is redundant
+since its output must equal the length of the arrays returned by the
+first two of these functions. It has therefore been removed.
+<br>
+(Wolfgang Bangerth, 2011/12/14)
+
+<li> Improved: Objects of the type LogStream::Prefix can now be used
+as a safe implementation of the push and pop mechanism for log
+prefices.
+<br>
+(Guido Kanschat, 2011/12/09)
+
+<li> New: IndexSet::add_indices(IndexSet).
+<br>
+(Timo Heister, 2011/12/09)
+
+<li> Fixed: Finite element Hessians get computed for codimension one,
+at least for FE_Poly derived classes.
+<br>
+(Guido Kanschat, 2011/12/07)
+
+<li> Changed: Output of ParameterHandler::print_parameters with argument
+ParameterHandler::LaTeX was not particularly readable. The output has
+therefore been rewritten to be more structured and readable.
+<br>
+(Wolfgang Bangerth, 2011/11/28)
+
+<li> Fixed: The TimerOutput class set the alignment of output to right-aligned
+under some circumstances, but didn't reset this to the previous value at the
+end of output. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/11/28)
+
+<li> New: The copy constructor of the SparseMatrixEZ function now works
+(rather than throwing an exception) if the copied matrix has size zero.
+This is in accordance to the other matrix classes.
+<br>
+(Wolfgang Bangerth, 2011/11/15)
+
+<li> New: The class ScalarFunctionFromFunctionObject provides a quick way to
+convert an arbitrary function into a function object that can be passed
+to part of the library that require the Function@<dim@> interface.
+The VectorFunctionFromScalarFunctionObject class does a similar thing.
+<br>
+(Wolfgang Bangerth, 2011/11/15)
+
+<li> New: The DoFTools::count_dofs_per_block function now also works
+for objects of type hp::DoFHandler.
+<br>
+(Jason Sheldon, 2011/11/13)
+
+<li> New: FETools::get_fe_from_name() can now return objects of type FE_Nothing.
+<br>
+(Scott Miller, Jonathan Pitt, 2011/11/10)
+
+<li> New: Implementation of an alternative handling of
+inhomogeneous constraints in ConstraintMatrix. This is controlled with
+a new parameter use_inhomogeneities_for_rhs in
+distribute_local_to_global() and determines whether the correct or
+zero values (this was the case before and still is the default) are
+kept in the linear system during the solution process.
+<br>
+(Jörg Frohne, 2011/11/01)
+
+<li> Fixed: SparseMatrix::mmult and SpareMatrix::Tmmult had a number of
+issues that are now fixed: (i) rebuilding the sparsity pattern was allowed
+even if several of the matrices involved in these operations shared a
+sparsity pattern; (ii) the functions had a vector argument that had a default
+value but the default value could not be used because it wasn't used in a
+template context deducible by the compiler.
+<br>
+(Wolfgang Bangerth, 2011/10/30)
+
+<li> New:
+parallel::distributed::Triangulation::mesh_reconstruction_after_repartitioning
+setting which is necessary for save()/load() to be deterministic. Otherwise
+the matrix assembly is done in a different order depending on the order of old
+refinements.
+<br>
+(Timo Heister, 2011/10/26)
+
+<li> New: TriaAccessor<>::minimum_vertex_distance().
+<br>
+(Timo Heister, 2011/10/25)
+
+<li> New: TableHandler::print_text now supports not only printing column
+keys above their own column, but also in a separate header, to make it simpler
+for external plotting programs to skip this line.
+<br>
+(Wolfgang Bangerth, 2011/10/22)
+
+<li> Fixed: Trying to write a TableHandler object that is empty resulted
+in a segmentation fault. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/10/21)
+
+<li> New: The TableHandler class can now pad columns that have only been
+partially filled. See the documentation of the class for a description.
+<br>
+(Wolfgang Bangerth, 2011/10/18)
+
+<li> Fixed: In TableHandler::print_text, it can happen that the function
+wants to print an empty string as the element of the table to be printed.
+This can confuse machine readers of this table, for example for visualization,
+since they then do not see this column in that row. To prevent this, we now
+print <code>""</code> in such places.
+<br>
+(Wolfgang Bangerth, 2011/10/18)
+
+<li> Fixed: Using Trilinos versions 10.4 and later on Debian failed to
+configure due to a different naming scheme of Trilinos libraries on
+Debian. This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/10/17)
+
+<li> Changed: The TableHandler class has been changed significantly
+internally. It could previously store arbitrary values (though in practice,
+only int, unsigned int, double and std::string were implemented). The class is
+now restricted to this particular set of types. On the other hand, the
+TableHandler class can now be serialized.
+<br>
+(Wolfgang Bangerth, 2011/10/17)
+
+<li> Fixed: searching in the doxygen documentation.
+<br>
+(Timo Heister, 2011/10/13)
+
+<li> New: parallel::distributed::Triangulation::save()/load() to store
+the refinement information to disk. Also supports saving solution vectors
+using the SolutionTransfer class.
+<br>
+(Timo Heister, 2011/10/12)
+
+<li> Fixed: The DataOut_DoFData::merge_patches did not compile with newer compilers.
+This is now fixed.
+<br>
+(Wolfgang Bangerth, 2011/10/11)
+</ol>
+
+
+*/
/**
- * @page changes_after_7_1 Changes after Version 7.1
+ * @page changes_after_7_2 Changes after Version 7.2
<p>
This is the list of changes made after the release of
-deal.II version 7.1.0.
+deal.II version 7.2.0.
All entries are signed with the names of the author.
</p>
</p>
<ol>
-<li> Changed/fixed: Several operations on Trilinos vectors that change the
-elements of these vectors were allowed accidentally for vectors that have
-ghost elements. This is a source of errors because a change on one
-MPI process will not show up on a different processor. Consequently, we
-intended to disallow all functions that modify vectors with ghost elements
-but this was not enforced for all of these functions. This is now fixed
-but it may lead to errors if your code relied on the existing behavior. The
-way to work around this is to only ever modify fully distributed vectors,
-and then copy it into a vector with ghost elements.
-<br>
-(Wolfgang Bangerth, 2012/08/06)
-
-<li> Changed: The argument material_id of the estimate-functions of
-the KellyErrorEstimator class is now of type types::material_id
-with default value numbers::invalid_material_id, instead of type
-unsigned int with default value numbers::invalid_unsigned_int. This
-should not make a difference to most users unless you specified the
-argument's default value by hand.
-<br>
-(Wolfgang Bangerth, Christian Goll 2012/02/27)
-
-<li>
-The member functions Triangulation::set_boundary and
-Triangulation::get_boundary now take a types::boundary_id instead of
-an unsigned int as argument. This now matches the actual data type
-used to store boundary indicators internally.
-<br>
-(Wolfgang Bangerth, Christian Goll 2012/02/27)
+<li> Nothing so far.
</ol>
<ol>
-<li>
-New: We now support parallel output using HDF5/xdmf.
-<br>
-(Eric Heien, Timo Heister, 2012/08/28)
-
-<li>
-New: We are now compatible with Trilinos 10.4.2, 10.8.5, and 10.12.2. See the
-readme for more information.
-<br>
-(Timo Heister, 2012/08/24)
-
-<li>
-Changed: To make the naming of types defined in namespace types
-consistent, we have renamed types::subdomain_id_t to
-types::subdomain_id. The old name has been retained as a typedef
-but is now deprecated.
-<br>
-(Wolfgang Bangerth, 2012/08/22)
-
-<li>
-Changed: Unify the concept of compress() for all linear algebra
-objects. Introduce type VectorOperation to decide between
-add and insert. Implement also for serial vectors. Note:
-this breaks distributed::vector::compress(bool). See
-@ref GlossCompress for more information.
-<br>
-(Timo Heister, 2012/08/13)
-
-<li>
-Changed: Support for the METIS 4.x has been replaced with support for
-METIS 5.x. Use <code>--with-metis=path/to/metis</code> to configure
-with METIS 5.x.
-<br>
-(Stefano Zampini, Toby D. Young 2012/08/13)
-
-<li>
-Changed: numerics/vectors.h is now called numerics/vector_tools.h and
-numerics/matrices.h is now called numerics/matrix_tools.h The old files are
-deprecated.
-<br>
-(Timo Heister 2012/08/09)
-
-<li>
-New: officially added support for clang 3.1 or newer.
-<br>
-(Timo Heister and Wolfgang Bangerth, 2012/08/07)
-
-<li>
-Changed: PETSc linking now prefers to use the libpetsc.so generated
-by PETSc starting from version 3.1+. This fixes the problem
-of linker errors on recent gcc/ubuntu versions.
-<br>
-(Timo Heister, 2012/08/07)
-
-<li>
-Fixed: On some 64-bit systems, we build deal.II with the <code>-m64</code>
-flag but forgot to build UMFPACK with this flag as well, leading to
-linker errors. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2012/07/31)
-
-Fixed: The Intel compiler, when using MPI, wants that <code>mpi.h</code>
-is included before header files like <code>stdio.h</code>. This can't
-be ensured in general because the inclusion might be indirectly, but
-we now work around the problem in other ways.
-<br>
-(Timo Heister, Wolfgang Bangerth, Michael Thomadakis, 2012/07/26)
-
-<li>
-Fixed: On some systems, the p4est library we use for distributed
-parallel computations installs its libraries into a <code>lib64/</code>
-directory instead of the usual <code>lib/</code>. deal.II can now deal
-with this.
-<br>
-(Wolfgang Bangerth, 2012/07/25)
-
-<li>
-New: step-43 is an extension of step-21 that shows efficient methods
-to solve multi-phase flow.
-<br>
-(Chih-Che Chueh, Wolfgang Bangerth, 2012/06/06)
-
-<li>
-New: step-15 has been replaced by a program that demonstrates the
-solution of nonlinear problem (the minimal surface equation) using
-Newton's method.
-<br>
-(Sven Wetterauer, 2012/06/03)
-
-<li>
-New: step-48 demonstrates the solution of a nonlinear wave equation
-with an explicit time stepping method. The usage of Gauss-Lobatto
-elements gives diagonal mass matrices, which obviates the solution of
-linear systems of equations. The nonlinear right hand side is
-evaluated with the matrix-free framework.
-<br>
-(Katharina Kormann and Martin Kronbichler, 2012/05/05)
-
-<li>
-New: step-37 shows how the matrix-free framework can be utilized to
-efficiently solve the Poisson equation without building global
-matrices. It combines fast operator evaluation with a multigrid solver
-based on polynomial Chebyshev smoother.
-<br>
-(Katharina Kormann and Martin Kronbichler, 2012/05/05)
-
-<li>
-New: A new matrix-free interface has been implemented. The framework
-is parallelized with MPI, TBB, and explicit vectorization instructions
-(new data type VectorizedArray). The class MatrixFree caches
-cell-based data in an efficient way. Common operations can be
-implemented using the FEEvaluation class.
-<br>
-(Katharina Kormann and Martin Kronbichler, 2012/05/05)
-
-<li>
-New: step-44 demonstrates one approach to modeling large
-deformations of nearly-incompressible elastic solids. The
-elastic response is governed by a non-linear, hyperelastic
-free-energy function. The geometrical response is also
-nonlinear, i.e., the program considers finite deformations.
-<br>
-(Andrew McBride and Jean-Paul Pelteret, 2012/04/25)
-
-<li>
-New: step-41 demonstrates solving the obstacle problem,
-a variational inequality.
-<br>
-(Joerg Frohne, 2012/04/22)
-
-<li>
-Changed: The version of BOOST we ship with deal.II has been upgraded
-to 1.49.0.
-<br>
-(Martin Kronbichler, 2012/04/07)
-
-<li>
-New: We have added a brief section to the step-12 tutorial programs that
-compares the DG solution computed there with one that one would obtain by
-using a continuous finite element.
-<br>
-(Wolfgang Bangerth, 2012/03/25)
-
-<li>
-New: Added support for codimension 2, i.e. for dim-dimensional objects
-embedded into spacedim=dim+2 dimensional space.
-<br>
-(Sebastian Pauletti, 2012/03/02)
-
-<li> Changed: Material and Boundary indicators have been both of the
-type unsigned char. Throughout the library, we changed their datatype
-to <code>types::material_id</code>
-resp. <code>types::boundary_id</code>, both typedefs of unsigned
-char. Internal faces are now characterized by
-numbers::internal_face_boundary_id(<code>=static_cast@<types::boundary_id@>(-1)</code>)
-instead of 255, so we get rid of that mysterious number in the source
-code. Material_ids are also assumed to lie in the range from 0 to
-numbers::invalid_material_id-1 (where <code>numbers::invalid_material_id =
-static_cast<types::material_id>(-1)</code>). With this change, it is now
-much easier to extend the range of boundary or material ids, if
-needed.
-<br>
-(Christian Goll 2012/02/27)
-
-<li> New: Functions like FEValues::get_function_values have long been
-able to extract values from pretty much any vector kind given to it (e.g.
-of kind Vector, BlockVector, PETScWrappers::Vector, etc). The list of
-allowed "vector" types now also includes IndexSet, which is interpreted
-as a vector of elements that are either zero or one, depending on whether
-an index is in the IndexSet or not.
-<br>
-As a consequence of this, the DataOut::add_data_vector functions now also
-work for such types of vectors, a use demonstrated in step-41.
-<br>
-(Wolfgang Bangerth, 2012/02/14)
-
-<li> New: It has long been a nuisance that the deal.II vector classes
-could only be accessed using <code>operator()</code> whereas the C++
-<code>std::vector</code> class required <code>operator[]</code>. This
-diminished the usefulness of template code. Historically, the reason
-was that the deal.II vector classes should use the same operator as
-the matrix classes, and C++ does not allow to use <code>operator[]</code>
-for matrices since this operator can only take a single argument.
-<br>
-In any case, all deal.II vector classes now support both kinds of
-access operators interchangeably.
-<br>
-(Wolfgang Bangerth, 2012/02/12)
-
-<li> Fixed: Linking shared libraries on PowerPC systems (e.g. on
-BlueGene systems) failed due to a miscommunication between compiler
-and linker. This is now worked around.
-<br>
-(Aron Ahmedia, Wolfgang Bangerth, 2012/02/06)
-
-<li> New: There is now a distributed deal.II vector class
-parallel::distributed::Vector that can be used with MPI. The
-vector is based on a contiguous locally owned range and allows easy
-access of ghost entries from other processors. The vector interface is
-very similar to the non-distributed class Vector<Number>.
-<br>
-(Katharina Kormann, Martin Kronbichler, 2012/01/25)
-
-<li> Fixed: The <code>common/scripts/make_dependencies</code> program
-now behaves like the C++ compiler when
-searching include paths for <code># include "..."</code> directives.
-<br>
-(Timo Heister, 2012/01/10)
-
-<li> Fixed: The Intel compiler complains that it can't copy Trilinos vector
-reference objects, preventing the compiling of step-32. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/11/09)
-
-<li> Fixed: Intel ICC 12.1 gets into trouble with BOOST because BOOST
-believes that the compiler supports C++0x but one then still has to
-specify the corresponding flag on the command line to avoid compiler
-errors. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/11/06)
-
-<li> Fixed: On some systems, <code>mpiCC</code> turns out to alias the
-C compiler, not the C++ compiler as expected. Consequently, try to use
-<code>mpic++</code> or <code>mpicxx</code> before <code>mpiCC</code> as
-these should really be unambiguous.
-<br>
-(Wolfgang Bangerth, 2011/11/05)
-
-<li> Fixed: Intel's ICC compiler identifies itself as <code>icpc version
-12.1.0 (gcc version 4.2.1 compatibility)</code> which we mistook as being
-GCC version 4.2. The same is true for the Intel C compiler. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/11/05)
-
-<li> Fixed: deal.II could not be compiled with gcc 4.6.1 when MPI is
-enabled due to a missing include file in file
-<code>source/base/utilities.cc</code>. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/10/25)
+<li> Nothing so far.
</ol>
<h3>Specific improvements</h3>
<ol>
-<li> Changed: To support Trilinos version 10.12.x we need to cache the
-result of has_ghost_elements() in parallel vectors at construction time
-of the vector. Starting from 10.12 Trilinos will communicate in this
-call, which therefore only works if called from all CPUs.
-<br>
-(Timo Heister, 2012/08/22)
-
-<li> New: The copy constructor of FullMatrix from IdentityMatrix
-used to be explicit, but that didn't appear to be necessary in hindsight.
-Consequently, it is now a regular copy constructor.
-<br>
-(Wolfgang Bangerth, 2012/08/14)
-
-<li> New: The Patterns::Map pattern allows to describe maps from keys
-to values in input files.
-<br>
-(Wolfgang Bangerth, 2012/08/01)
-
-<li> Fixed: DoFTools::make_zero_boundary_constraints now also works for parallel distributed triangulations.
-<br>
-(Wolfgang Bangerth, 2012/07/24)
-
-<li> Fixed: GridTools::find_active_cell_around_point() works now also if the cell in which the point we look for lies is not adjacent to the closest vertex of p. The tests bits/find_cell_8 and _9 illustrate this.
-<br>
-(Wolfgang Bangerth, Christian Goll 2012/07/20)
-
-<li> Fixed: Using the SolutionTransfer class with hp::DoFHandler
-and on meshes where some cells are associated with a FE_Nothing element
-could result in an error. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2012/06/29)
-
-<li> Fixed: The MappingQ1::transform_real_to_unit_cell function as
-well as the equivalent ones in derived classes sometimes get into
-trouble if they are asked to compute the preimage of this point
-in reference cell coordinates. This is because for points outside
-the reference cell, the mapping from unit to real cell is not
-necessarily invertible, and consequently the Newton iteration to
-find the preimage did not always converge, leading to an exception.
-While this is not entirely wrong (we could, after all, not compute
-the desired quantity), not all callers of this function were prepared
-to accept this result -- in particular, the function
-CellAccessor<3>::point_inside should have really just returned false
-in such cases but instead let the exception so generated propagate
-through. This should now be fixed.
-<br>
-(Wolfgang Bangerth, Eric Heien, Sebastian Pauletti, 2012/06/27)
-
-<li> Fixed: The function VectorTools::compute_no_normal_flux_constraints had
-a bug that led to an exception whenever we were computing constraints for
-vector fields located on edges shared between two faces of a 3d cell if those
-faces were not parallel to the axes of the coordinate system. This is now fixed.
-<br>
-(Wolfgang Bangerth, Jennifer Worthen, 2012/06/27)
-
-<li>
-Fixed: Due to an apparent bug in autoconf, it was not possible to
-override the <code>F77</code> environment variable to select anything
-else than gfortran. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2012/06/08)
-
-<li> Fixed: TrilinosWrappers::VectorBase::swap() is now working as expected. (thanks Uwe Köcher)
-<br>
-(Timo Heister 2012/07/03)
-
-<li> Fixed: Some instantiations for
-DerivativeApproximation::approximate_derivative_tensor() were missing.
-<br>
-(Timo Heister 2012/06/07)
-
-<li> New: The finite element type FE_DGQArbitraryNodes is now
-working also in codimension one spaces.
-<br>
-(Luca Heltai, Andrea Mola 2012/06/06)
-
-<li> Fixed: Computing the $W^{1,\infty}$ norm and seminorm in
-VectorTools::integrate_difference was not implemented. This is now
-fixed.
-<br>
-(Wolfgang Bangerth 2012/06/02)
-
-<li> Fixed: A problem in MappingQ::transform_real_to_unit_cell
-that sometimes led the algorithm in this function to abort.
-<br>
-(Wolfgang Bangerth 2012/05/30)
-
-<li> New: The function DataOutInterface::write_pvd_record can be used
-to provide Paraview with metadata that describes which time in a
-simulation a particular output file corresponds to.
-<br>
-(Marco Engelhard 2012/05/30)
-
-<li> Fixed: A bug in 3d with hanging nodes in GridTools::find_cells_adjacent_to_vertex()
-that caused find_active_cell_around_point() to fail in those cases.
-<br>
-(Timo Heister, Wolfgang Bangerth 2012/05/30)
-
-<li> New: DoFTools::make_periodicity_constraints implemented which
-inserts algebraic constraints due to periodic boundary conditions
-into a ConstraintMatrix.
-<br>
-(Matthias Maier, 2012/05/22)
-
-<li> New: The GridIn::read_unv function can now read meshes generated
-by the Salome framework, see http://www.salome-platform.org/ .
-<br>
-(Valentin Zingan, 2012/04/27)
-
-<li> New: There is now a second DoFTools::map_dofs_to_support_points
-function that also works for parallel::distributed::Triangulation
-triangulations.
-<br>
-(Wolfgang Bangerth, 2012/04/26)
-
-<li> New: There is now a second DoFTools::extract_boundary_dofs
-function that also works for parallel::distributed::Triangulation
-triangulations.
-<br>
-(Wolfgang Bangerth, 2012/04/26)
-
-<li> New: The FullMatrix::extract_submatrix_from, FullMatrix::scatter_matrix_to,
-FullMatrix::set functions are new.
-<br>
-(Andrew McBride, Jean Paul Pelteret, Wolfgang Bangerth, 2012/04/24)
-
-<li> Fixed:
-The method FEValues<dim>::inverse_jacobian() previously returned the transpose of the
-inverse Jacobians instead of just the inverse Jacobian as documented. This is now fixed.
-<br>
-(Sebastian Pauletti, Katharina Kormann, Martin Kronbichler, 2012/03/11)
-
-<li> Extended:
-SolutionTransfer is now also able to transfer solutions between hp::DoFHandler where
-the finite element index changes during refinement.
-<br>
-(Katharina Kormann, Martin Kronbichler, 2012/03/10)
-
-<li> Changed:
-A new method to determine an initial guess for the Newton method was coded
-in MappingQ::transform_real_to_unit_cell.
-The code in transform_real_to_unit_cell was cleaned a little bit and a new code
-for the @<2,3@> case was added.
-<br>
-(Sebastian Pauletti, 2012/03/02)
-
-<li> Changed:
-In the context of codim@>0, Mapping::transform would require different inputs
-depending on the mapping type.
-For mapping_covariant, mapping_contravariant the input is DerivativeForm<1, dim, spacedim>
-but for mapping_covariant_gradient, mapping_contravariant_gradient the input is Tensor<2,dim>.
-<br>
-(Sebastian Pauletti, 2012/03/02)
-
-<li> New:
-A new class DerivativeForm was added.
-This class is supposed to represent the derivatives of a mapping.
-<br>
-(Sebastian Pauletti, 2012/03/02)
-
-<li> Fixed: TrilinosWrappers::Vector::all_zero() in parallel.
-<br>
-(Timo Heister, Jörg Frohne, 2012/03/06)
-
-<li> New: GridGenerator::quarter_hyper_shell() in 3d.
-<br>
-(Thomas Geenen, 2012/03/05)
-
-<li> New: DataOut::write_vtu_in_parallel(). This routine uses MPI I/O to write
-a big vtu file in parallel.
-<br>
-(Timo Heister, 2012/02/29)
-
-<li> Fixed: parallel::distributed::Triangulation::clear() forgot
-to update the number cache of this class, leading to wrong results
-when calling functions like
-parallel::distributed::Triangulation::n_global_active_cells();
-<br>
-(Wolfgang Bangerth, 2012/02/20)
-
-<li> Improved: FEFieldFunction allows now for the computation of Laplacians.
-<br>
-(Christian Goll, 2012/02/16)
-
-<li> New: The function IndexSet::fill_binary_vector creates a numerical
-representation of an IndexSet containing zeros and ones.
-<br>
-(Wolfgang Bangerth, 2012/02/12)
-
-<li> New: The function IndexSet::clear resets an index set to be empty.
-<br>
-(Wolfgang Bangerth, 2012/02/12)
-
-<li> New: There are now global functions l1_norm() and linfty_norm() that compute
-the respective norms of a rank-2 tensor.
-<br>
-(Wolfgang Bangerth, 2012/02/08)
-
-<li> New: VectorTools::interpolate_to_different_mesh implemented which interpolates between
- DoFHandlers with different triangulations based on a common coarse grid.
-<br>
-(Matthias Maier, 2012/02/08)
-
-<li> Improved: DoFTools::map_dofs_to_support_points() now also works within the hp framework.
-<br>
-(Christian Goll, 2012/02/02)
-
-<li> Improved: There is now a constructor for FESystem that allows to
-create collections of finite elements of arbitrary length.
-<br>
-(Jason Sheldon, 2012/01/27)
-
-<li> Improved: VectorTools::point_value() now also works within the hp framework.
-<br>
-(Christian Goll, 2012/01/26)
-
-<li> Fixed: GridTools::find_active_cell_around_point() for the hp-case works now also with MappingCollections containing only one mapping, as is the standard case in other functions using hp.
-<br>
-(Christian Goll, 2012/01/26)
-
-<li> Fixed: parallel::distributed::refine_and_coarsen_fixed_fraction()
-contained a rounding bug that often produced wrong results.
-<br>
-(Timo Heister, 2012/01/24)
-
-<li> Improved: Utilities::break_text_into_lines now also splits the string at '\\n'.
-<br>
-(Timo Heister, 2012/01/17)
-
-<li> Fixed: When <code>./configure</code> does not detect the presence
-of <code>zlib</code>, writing output in VTU format failed to produce
-a valid output file.
-<br>
-(Timo Heister, 2012/01/03)
-
-<li> Improved: <code>PETScWrappers::SolverXXX</code> class was
-restricted to using default solver options for the KSP only. It is now
-possible to override those by using PETSc command-line options
-<code>-ksp_*</code>; giving greater flexibility in controlling PETSc
-solvers. (See the class's documentation).
-<br>
-(Vijay S. Mahadevan, 2011/12/22)
-
-<li> New: The GridIn class now also reads the GMSH format 2.2 as written by
-GMSH 2.5.
-<br>
-(Vijay S. Mahadevan, Wolfgang Bangerth, 2011/12/19)
-
-<li> Improved: The GridRefinement::refine_and_coarsen_optimize function
-assumed that the expected convergence order was 2. It has now gotten an
-argument by which the user can prescribe a different value. A bug has also
-been fixed in which the function incorrectly assumed in its algorithm that
-the mesh was two-dimensional.
-<br>
-(Christian Goll, 2011/12/16)
-
-<li> Fixed: Restriction and prolongation didn't work for elements of
-kind FE_Nothing. Consequently, many other parts of the library also
-didn't work, such as the SolutionTransfer class. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/12/15)
-
-<li> Fixed: The DerivativeApproximation class now works for distributed computations.
-<br>
-(Timo Heister, 2011/12/15)
-
-<li> Changed: The ExcMessage exception class took an argument of
-type <code>char*</code> that was displayed when the exception
-was raised. However, character pointers are awkward to work with
-because (i) they can not easily be composed to contain things like
-file names that are only known at run-time, and (ii) the string
-pointed to by the pointer had to live longer than the local expression
-in which the exception is generated when using the AssertThrow macro
-(because, when we create an exception, the exception object is passed
-up the call stack until we find a catch-clause; at that time, however,
-the scope in which the exception object was created has long been left).
-This restriction made it impossible to construct the message using std::string
-and then just do something like <code>(std::string("file: ")+filename).c_str()</code>.
-<br>
-To remedy this flaw, the type of the argument to ExcMessage has been
-changed to std::string since objects of this type are readily copyable
-and therefore live long enough.
-<br>
-(Wolfgang Bangerth, 2011/12/14)
-
-<li> New: Setting up a class derived from DataPostprocessor required some
-pretty mechanical steps in which one has to overload four member functions.
-For common cases where a postprocessor only computes a single scalar or
-a single vector, this is tedious and unnecessary. For these cases, the
-new classes DataPostprocessorScalar and DataPostprocessorVector provide
-short cuts that make life simpler.
-<br>
-(Wolfgang Bangerth, 2011/12/14)
-
-<li> Changed: The DataPostprocessor class previously required users of this
-class to overload DataPostprocessor::get_names(),
-DataPostprocessor::get_data_component_interpretation()
-and DataPostprocessor::n_output_variables(). The latter function is redundant
-since its output must equal the length of the arrays returned by the
-first two of these functions. It has therefore been removed.
-<br>
-(Wolfgang Bangerth, 2011/12/14)
-
-<li> Improved: Objects of the type LogStream::Prefix can now be used
-as a safe implementation of the push and pop mechanism for log
-prefices.
-<br>
-(Guido Kanschat, 2011/12/09)
-
-<li> New: IndexSet::add_indices(IndexSet).
-<br>
-(Timo Heister, 2011/12/09)
-
-<li> Fixed: Finite element Hessians get computed for codimension one,
-at least for FE_Poly derived classes.
-<br>
-(Guido Kanschat, 2011/12/07)
-
-<li> Changed: Output of ParameterHandler::print_parameters with argument
-ParameterHandler::LaTeX was not particularly readable. The output has
-therefore been rewritten to be more structured and readable.
-<br>
-(Wolfgang Bangerth, 2011/11/28)
-
-<li> Fixed: The TimerOutput class set the alignment of output to right-aligned
-under some circumstances, but didn't reset this to the previous value at the
-end of output. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/11/28)
-
-<li> New: The copy constructor of the SparseMatrixEZ function now works
-(rather than throwing an exception) if the copied matrix has size zero.
-This is in accordance to the other matrix classes.
-<br>
-(Wolfgang Bangerth, 2011/11/15)
-
-<li> New: The class ScalarFunctionFromFunctionObject provides a quick way to
-convert an arbitrary function into a function object that can be passed
-to part of the library that require the Function@<dim@> interface.
-The VectorFunctionFromScalarFunctionObject class does a similar thing.
-<br>
-(Wolfgang Bangerth, 2011/11/15)
-
-<li> New: The DoFTools::count_dofs_per_block function now also works
-for objects of type hp::DoFHandler.
-<br>
-(Jason Sheldon, 2011/11/13)
-
-<li> New: FETools::get_fe_from_name() can now return objects of type FE_Nothing.
-<br>
-(Scott Miller, Jonathan Pitt, 2011/11/10)
-
-<li> New: Implementation of an alternative handling of
-inhomogeneous constraints in ConstraintMatrix. This is controlled with
-a new parameter use_inhomogeneities_for_rhs in
-distribute_local_to_global() and determines whether the correct or
-zero values (this was the case before and still is the default) are
-kept in the linear system during the solution process.
-<br>
-(Jörg Frohne, 2011/11/01)
-
-<li> Fixed: SparseMatrix::mmult and SpareMatrix::Tmmult had a number of
-issues that are now fixed: (i) rebuilding the sparsity pattern was allowed
-even if several of the matrices involved in these operations shared a
-sparsity pattern; (ii) the functions had a vector argument that had a default
-value but the default value could not be used because it wasn't used in a
-template context deducible by the compiler.
-<br>
-(Wolfgang Bangerth, 2011/10/30)
-
-<li> New:
-parallel::distributed::Triangulation::mesh_reconstruction_after_repartitioning
-setting which is necessary for save()/load() to be deterministic. Otherwise
-the matrix assembly is done in a different order depending on the order of old
-refinements.
-<br>
-(Timo Heister, 2011/10/26)
-
-<li> New: TriaAccessor<>::minimum_vertex_distance().
-<br>
-(Timo Heister, 2011/10/25)
-
-<li> New: TableHandler::print_text now supports not only printing column
-keys above their own column, but also in a separate header, to make it simpler
-for external plotting programs to skip this line.
-<br>
-(Wolfgang Bangerth, 2011/10/22)
-
-<li> Fixed: Trying to write a TableHandler object that is empty resulted
-in a segmentation fault. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/10/21)
-
-<li> New: The TableHandler class can now pad columns that have only been
-partially filled. See the documentation of the class for a description.
-<br>
-(Wolfgang Bangerth, 2011/10/18)
-
-<li> Fixed: In TableHandler::print_text, it can happen that the function
-wants to print an empty string as the element of the table to be printed.
-This can confuse machine readers of this table, for example for visualization,
-since they then do not see this column in that row. To prevent this, we now
-print <code>""</code> in such places.
-<br>
-(Wolfgang Bangerth, 2011/10/18)
-
-<li> Fixed: Using Trilinos versions 10.4 and later on Debian failed to
-configure due to a different naming scheme of Trilinos libraries on
-Debian. This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/10/17)
-
-<li> Changed: The TableHandler class has been changed significantly
-internally. It could previously store arbitrary values (though in practice,
-only int, unsigned int, double and std::string were implemented). The class is
-now restricted to this particular set of types. On the other hand, the
-TableHandler class can now be serialized.
-<br>
-(Wolfgang Bangerth, 2011/10/17)
-
-<li> Fixed: searching in the doxygen documentation.
-<br>
-(Timo Heister, 2011/10/13)
-
-<li> New: parallel::distributed::Triangulation::save()/load() to store
-the refinement information to disk. Also supports saving solution vectors
-using the SolutionTransfer class.
-<br>
-(Timo Heister, 2011/10/12)
-
-<li> Fixed: The DataOut_DoFData::merge_patches did not compile with newer compilers.
-This is now fixed.
-<br>
-(Wolfgang Bangerth, 2011/10/11)
+<li> Nothing so far.
</ol>
projects / dealii-svn.git / commitdiff