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df647cf959
* add missing copyright notices * workaround for xml_iarchive bug to handle XML with comments * fixing min/max according to boost guidelines
113 lines
5.3 KiB
Plaintext
113 lines
5.3 KiB
Plaintext
[/
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Copyright Hans Dembinski 2018 - 2019.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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https://www.boost.org/LICENSE_1_0.txt)
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]
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[section:history Revision history]
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[heading Boost 1.71]
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* New features
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* Thread-safe accumulators boost::histogram::accumulators::thread_safe based on std::atomics
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* Support for thread-safe storages
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* Support for compiling without exceptions/RTTI (increases performance by 10-20 %) [with contributions from Glen Fernandez]
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* Performance improvements for 1D and 2D histograms
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* boost::histogram::indexed now returns forward iterator range instead of input iterator range
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* boost::histogram::indexed_range::accessor is now non-copyable and acts like reference to cell value, making most algorithms from the stdlib work
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* boost::histogram::algorithm::reduce
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* New slice option
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* Fuse shrink, slice, and rebin options passed for the same axis
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* Support histograms with some axis types with reduction support
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* boost::histogram::algorithm::project accepts runtime indices for static histograms
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* Fixes
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* boost::histogram::algorithm::reduce also works on histograms that have some axis types without reduction support
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* boost::histogram::axis::traits::update now works correctly for boost::histogram::axis::variant
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* Other
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* 100 % test coverage
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* Drastically reduced internal Boost dependencies
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* Improved documentation and examples
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* Internally replaced boost::variant with boost::variant2
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* boost::histogram::axis::traits::is_reducible detects reducible axis types
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* Cleanup and refactoring of internals
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* Guarantee no-throw moves for all builtin axis types
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* Improved internal benchmarks
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* Compile cleanly at higher warning levels
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[heading Boost 1.70]
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First Boost release, version 4.0 in former internal counting.
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* Removed Python bindings, will be developed in separate repository
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* All axes can be made optionally circular, except category axis
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* All axes now support generic attached metadata
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* All axes have now independently configurable underflow/overflow extra bins
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* Removed circular axis (which is just a circular regular axis)
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* Added indexed adaptor generator for convenient and fast iteration over histograms
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* Support for axes that can grow in range
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* Support for axes which accept multiple values (example: hexagonal binning)
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* Support for profiles and more generally, arbitrary accumulators in each cell
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* Support for serializing to xml archives
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* Added compatibility with Boost.Range, Boost.Units, and Boost.Accumulators
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* Added deduction guides for axis types and histogram
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* Performance improvements
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* Renamed `adaptive_storage` to `unlimited_storage`
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* Replaced `boost::multiprecision::cpp_int` with custom type to decouple libraries
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* Internal simplification of `axis::variant`
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* Make all storages behave more like containers, simplifying the design
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* Histograms supports add, sub, mul, div
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* replaced `operator[]` in axis with explicit method `bin`
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* replaced `operator()` in axis with explicit method `index`
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* replaced internal use of `boost::containers` with stdlib containers
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* Much improved docs, reference documentation, user guide, more examples
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[heading 3.2 (not in Boost)]
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* Allocator support everywhere
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* Internal refactoring
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[heading 3.1 (not in Boost)]
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* Renamed `bincount` method to `size`
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* Support for axes with only overflow and no underflow bin
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* category axis now by default has bin for "other" input that does not fall
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into the predefined categories, making it consistent with other axes
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* NaN is now consistently put into overflow bin for all axes
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* Eliminated warnings about safe internal conversions on MSVC
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* Established a cpp house style with corresponding .clang-format file
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* Better detection of Python library on all systems
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* Improved code coverage by testing more input errors
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* Raise ValueError instead of generic RuntimeError in Python on input errors
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[heading 3.0 (not in Boost)]
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* Support for efficient adding of multiple histograms and scaling
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* Re-design of category axis as a general mapping between unique values and bins
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* Re-design of the bin description an axis returns upon element access
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* Interface cleanup and simplification, more consistency between Python and C++ interface
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* Iterators for histogram and axes for STL compatibility
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* Regular axis in C++: Allowing transforms with state
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* Regular axis in Python: Support for all C++ transforms
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* Polymorphic axis::any type
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* Internal refactoring from boost::mpl and boost::fusion to std::tuple and boost::mp11
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* Windows support
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[heading 2.0 (not in Boost)]
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* Added static_histogram (v1.0 only had dynamic_histogram).
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* Merged wfill(...) and fill(...) interface.
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* Support custom allocators in storage classes.
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* Replaced static_storage with array_storage.
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* Replaced dynamic_storage with unlimited_storage, which adds the capability to grow the bin counter into a cpp_int, thus avoiding integer overflow completely.
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* Serialization uses binary_archive instead of text_archive. The latter is portable, but the performance is terrible.
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* Python interface changed: histograms are now iterable, returning axis classes
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* Support reduction (removing a subset of axes and returning the equivalent histogram; in other words, those axes are integrated over)
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[heading 1.0 (not in Boost)]
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* First stable version.
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[endsect] |