Subject: [Ffc] Version 0.7.1 of ffc released

From: "Anders Logg" <[email-masked]>
Date: Fri, 04 Dec 2009 15:18:51 +0100

0.7.1
 - Handle setting quadrature degree when it is set to None in UFL form
 - Added demo: HyperElasticity.ufl
0.7.0
 - Move contents of TODO to: https://blueprints.launchpad.net/ffc
 - Support for restriction of finite elements to only consider facet dofs
 - Use quadrature_order from metadata when integrating terms using tensor representation
 - Use loop to reset the entries of the local element tensor
 - Added new symbolic classes for quadrature optimisation (speed up compilation)
 - Added demos: Biharmonic.ufl, div(grad(v)) term;
                ReactionDiffusion.ufl, tuple notation;
                MetaData.ufl, how to attach metadata to the measure;
                ElementRestriction.ufl, restriction of elements to facets
 - Tabulate the coordinates of the integration points in the tabulate_tensor() function
 - Change command line option '-f split_implementation' -> '-f split'
 - Renaming of files and restructuring of the compiler directory
 - Added option -q rule (--quadrature-rule rule) to specify which rule to use
   for integration of a given integral. (Can also bet set through the metadata
   through "quadrature_rule"). No rules have yet been implemented, so default
   is the FIAT rule.
 - Remove support for old style .form files/format
0.6.2 [2009-04-07]
 - Experimental support for UFL, supporting both .form and .ufl
 - Moved configuration and construction of python extension module to ufc_module
0.6.1 [2009-02-18]
 - Initial work on UFL transition
 - Minor bug fixes
 - The version of ufc and swig is included in the form signature
 - Better system configuration for JIT compiled forms
 - The JIT compiled python extension module use shared_ptr for all classes
0.6.0 [2009-01-05]
 - Update DOLFIN output format (-l dolfin) for DOLFIN 0.9.0
 - Cross-platform fixes for test scripts
 - Minor bug fix for quadrature code generation (forms affected by this bug would not be able to compile
 - Fix bug with output of *.py.
 - Permit dot product bewteen rectangular matrices (Frobenius norm)
0.5.1 [2008-10-20]
 - New operator skew()
 - Allow JIT compilation of elements and dof maps
 - Rewrite JIT compiler to rely on Instant for caching
 - Display flop count for evaluating the element tensor during compilation
 - Add arguments language and representation to options dictionary
 - Fix installation on Windows
 - Add option -f split_implementation for separate .h and .cpp files
0.5.0 [2008-06-23]
 - Remove default restriction +/- for Constant
 - Make JIT optimization (-O0 / -O2) optional
 - Add in-memory cache to speed up JIT compiler for repeated assembly
 - Allow subdomain integrals without needing full range of integrals
 - Allow simple subdomain integral specification dx(0), dx(1), ds(0) etc
0.4.5 [2008-04-30]
 - Optimizations in generated quadrature code
 - Change formatting of floats from %g to %e, fixes problem with too long integers
 - Bug fix for order of values in interpolate_vertex_values, now according to UFC
 - Speed up JIT compiler
 - Add index ranges to form printing
 - Throw runtime error in functions not generated
 - Update DOLFIN format for new location of include files
0.4.4 [2008-02-18]
 - RT, BDM, BDFM and Nedelec now working in 2D and 3D
 - New element type QuadratureElement
 - Add support for 1D elements
 - Add experimental support for new Darcy-Stokes element
 - Use FIAT transformed spaces instead of mapping in FFC
 - Updates for UFC 1.1
 - Implement caching of forms/modules in ~/.ffc/cache for JIT compiler
 - Add script ffc-clean
 - New operators lhs() and rhs()
 - Bug fixes in simplify
 - Bug fixes for Nedelec and BDFM
 - Fix bug in mult()
 - Fix bug with restrictions on exterior facet integrals
 - Fix bug in grad() for vectors
 - Add divergence operator for matrices
0.4.3 [2007-10-23]
 - Require FIAT to use UFC reference cells
 - Fix bug in form simplification
 - Rename abs --> modulus to avoid conflict with builtin abs
 - Fix bug in operators invert, abs, sqrt
 - Fix bug in integral tabulation
 - Add BDFM and Nedelec elements (nonworking)
 - Fix bug in JIT compiler
0.4.2 [2007-08-31]
 - Change license from GPL v2 to GPL v3 or later
 - Add JIT (just-in-time) compiler
 - Fix bug for constants on interior facets
0.4.1 [2007-06-22]
 - Fix bug in simplification of forms
 - Optimize removal of unused terms in code formattting
0.4.0 [2007-06-20]
 - Move to UFC interface for code generation
 - Major rewrite, restructure, cleanup
 - Add support for Brezzi-Douglas-Marini (BDM) elements
 - Add support for Raviart-Thomas (RT) elements
 - Add support for Discontinuous Galerkin (DG) methods
 - Operators jump() and avg()
 - Add quadrature compilation mode (experimental)
 - Simplification of forms
 - Operators sqrt(), abs() and inverse
 - Improved Python interface
 - Add flag -f precision=n
 - Generate code for basis functions and derivatives
 - Use Set from set module for Python2.3 compatibility
0.3.5 [2006-12-01]
 - Bug fixes
 - Move from Numeric to numpy
0.3.4 [2006-10-27]
 - Updates for new DOLFIN mesh library
 - Add support for evaluation of functionals
 - Add operator outer() for outer product of vector-valued functions
 - Enable optimization of linear forms (in addition to bilinear forms)
 - Remove DOLFIN SWIG format
 - Fix bug in ffc -v/--version (thanks to Ola Skavhaug)
 - Consolidate DOLFIN and DOLFIN SWIG formats (patch from Johan Jansson)
 - Fix bug in optimized compilation (-O) for some forms ("too many values to unpack")
0.3.3 [2006-09-05]
 - Fix bug in operator div()
 - Add operation count (number of multiplications) with -d0
 - Add hint for printing more informative error messages (flag -d1)
 - Modify implementation of vertexeval()
 - Add support for boundary integrals (Garth N. Wells)
0.3.2 [2006-04-01]
 - Add support for FErari optimizations, new flag -O
0.3.1 [2006-03-28]
 - Remove verbose output: silence means success
 - Generate empty boundary integral eval() to please Intel C++ compiler
 - New classes TestFunction and TrialFunction
0.3.0 [2006-03-01]
 - Work on manual, document command-line and user-interfaces
 - Name change: u --> U
 - Add compilation of elements without form
 - Add generation of FiniteElementSpec in DOLFIN formats
 - Fix bugs in raw and XML formats
 - Fix bug in LaTeX format
 - Fix path and predefine tokens to enable import in .form file
 - Report number of entries in reference tensor during compilation
0.2.5 [2005-12-28]
 - Add demo Stabilization.form
 - Further speedup computation of reference tensor (use ufunc Numeric.add)
0.2.4 [2005-12-05]
 - Report time taken to compute reference tensor
 - Restructure computation of reference tensor to use less memory.
   As a side effect, the speed has also been improved.
 - Update for DOLFIN name change node --> vertex
 - Update finite element interface for DOLFIN
 - Check for FIAT bug in discontinuous vector Lagrange elements
 - Fix signatures for vector-valued elements
0.2.3 [2005-11-28]
 - New fast Numeric/BLAS based algorithm for computing reference tensor
 - Bug fix: reassign indices for complete subexpressions
 - Bug fix: operator Function * Integral
 - Check tensor notation for completeness
 - Bug fix: mixed elements with more than two function spaces
 - Don't declare unused coefficients (or gcc will complain)
0.2.2 [2005-11-14]
 - Add command-line argument -v / --version
 - Add new operator mean() for projection onto piecewise constants
 - Add support for projections
 - Bug fix for higher order mixed elements: declaration of edge/face_ordering
 - Generate code for sub elements of mixed elements
 - Add new test form: TensorWeighteLaplacian
 - Add new test form: EnergyNorm
 - Fix bugs in mult() and vec() (skavhaug)
 - Reset correct entries of G for interior in BLAS mode
 - Only assign to entries of G that meet nonzero entries of A in BLAS mode
0.2.1 [2005-10-11]
 - Only generate declarations that are needed according to format
 - Check for missing options and add missing default options
 - Simplify usage of FFC as Python module: from ffc import *
 - Fix bug in division with constants
 - Generate output for BLAS (with option -f blas)
 - Add new XML output format
 - Remove command-line option --license (collect in compiler options -f)
 - Modify demo Mass.form to use 3:rd order Lagrange on tets
 - Fix bug in dofmap() for equal order mixed elements
 - Add compiler option -d debuglevel
 - Fix Python Numeric bug: vdot --> dot
0.2.0 [2005-09-23]
 - Generate function vertexeval() for evaluation at vertices
 - Add support for arbitrary mixed elements
 - Add man page
 - Work on manual, chapters on form language, quickstart and installation
 - Handle exceptions gracefully in command-line interface
 - Use new template fenicsmanual.cls for manual
 - Add new operators grad, div, rot (curl), D, rank, trace, dot, cross
 - Factorize common reference tensors from terms with equal signatures
 - Collect small building blocks for form algebra in common module tokens.py
0.1.9 [2005-07-05]
 - Complete support for general order Lagrange elements on triangles and tetrahedra
 - Compute reordering of dofs on tets correctly
 - Update manual with ordering of dofs
 - Break compilation into two phases: build() and write()
 - Add new output format ASE (Matt Knepley)
 - Improve python interface to FFC
 - Remove excessive logging at compilation
 - Fix bug in raw output format
0.1.8 [2005-05-17]
 - Access data through map in DOLFIN format
 - Experimental support for computation of coordinate maps
 - Add first draft of manual
 - Experimental support for computation of dof maps
 - Allow specification of the number of components for vector Lagrange
 - Count the number of zeros dropped
 - Fix bug in handling command-line arguments
 - Use module sets instead of built-in set (fix for Python 2.3)
 - Handle constant indices correctly (bug reported by Garth N. Wells)
0.1.7 [2005-05-02]
 - Write version number to output
 - Add command-line option for choosing license
 - Display usage if no input is given
 - Bug fix for finding correct prefix of file name
 - Automatically choose name of output file (if not supplied)
 - Use FIAT tabulation mode for vector-valued elements (speedup a factor 5)
 - Use FIAT tabulation mode for scalar elements (speedup a factor 1000)
 - Fig bug in demo elasticity.form (change order of u and v)
 - Make references to constants const in DOLFIN format
 - Don't generate code for unused entries of geometry tensor
 - Update formats to write numeric constants with full precision
0.1.6 [2005-03-17]
 - Add support for mixing multiple different finite elements
 - Add support for division with constants
 - Fix index bug (reverse order of multi-indices)
0.1.5 [2005-03-14]
 - Automatically choose the correct quadrature rule for precomputation
 - Add test program for verification of FIAT quadrature rules
 - Fix bug for derivative of sum
 - Improve common interface for debugging: add indentation
 - Add support for constants
 - Fix bug for sums of more than one term (make copies of references in lists)
 - Add '_' in naming of geometry tensor (needed for large dimensions)
 - Add example elasticity.form
 - Cleanup build_indices()
0.1.4-1 [2005-02-07]
 - Fix version number and remove build directory from tarball
0.1.4 [2005-02-04]
 - Fix bug for systems, seems to work now
 - Add common interface for debugging
 - Modify DOLFIN output to initialize functions
 - Create unique numbers for each function
 - Use namespaces for DOLFIN output instead of class names
 - Temporary implementation of dof mapping for vector-valued elements
 - Make DOLFIN output format put entries into PETSc block
 - Change name of coefficient data: c%d[%d] -> c[%d][%d]
 - Change ordering of basis functions (one component at a time)
 - Add example poissonsystem.form
 - Modifications for new version of FIAT (FIAT-L)
   FIAT version 0.1 a factor 5 slower (no memoization)
   FIAT version 0.1.1 a little faster, only a factor 2 slower
 - Add setup.py script
0.1.3 [2004-12-06]
 - Fix bug in DOLFIN format (missing value when zero)
 - Add output of reference tensor to LaTeX format
 - Make raw output format print data with full precision
 - Add component diagram
 - Change order of declaration of basis functions
 - Add new output format raw
0.1.2 [2004-11-17]
 - Add command-line interface ffc
 - Add support for functions (coefficients)
 - Add support for constants
 - Allow multiple forms (left- and right-hand side) in same file
 - Add test examples: poisson.form, mass.form, navierstokes.form
 - Wrap FIAT to create vector-valued finite element spaces
 - Check ranks of operands
 - Clean up algebra, add base class Element
 - Add some documentation (class diagram)
 - Add support for LaTeX output
0.1.1-1 [2004-11-10]
 - Add missing file declaration.py
0.1.1 [2004-11-10]
 - Make output variable names configurable
 - Clean up DOLFIN code generation
 - Post-process form to create reference, geometry, and element tensors
 - Experimental support for general tensor-valued elements
 - Clean up and improve index reassignment
 - Use string formatting for generation of output
 - Change index ordering to access row-wise
0.1.0 [2004-10-22]
 - First iteration of the FEniCS Form Compiler