ENDFtk v1.2.0

This update makes the following changes on interface functions:

• The regions() and pairs() interface functions on the TAB1 record interface functions have been removed. The removal of these interface functions has no impact on the Python interface as these interface functions were not included on the Python side.
• When using the C++ interface for atomic relaxation data, a Transition now has a isRadiative() and isNonRadiative() function returning a boolean so that a user can check if a given transition emits a photon or electron without having to look at subshell identifiers. Since Transition is not exposed on the Python side, this is not available on the Python side.
• NBT(), INT(), boundaries(), interpolants(), NR(), numberInterpolationRegions() interface functions were added on TwoBodyScattering::TabulatedDistribution in MF6 and MF26 that mimic the behaviour of a TAB1 record.
• For LCOMP1 RMatrix Limited, the GAM() and resonanceParameters() functions have been changed to work the same way as the MF2 version. The size of the returned arrays is no longer equal to the number of channels.
• fissionYieldValues() and fissionYieldUncertainties() functions were added to extract fission yield data as single columns in the FissionYieldData class in MF8.
• Miscellaneous documentation updates were made.

In addition, the following issues were corrected:

• In some ENDF files (such as found in the JEFF 3.3 decay library files) the directory records in MF1 MT451 sometimes have superfluous zeros in column 1 and 2 (similar to how END records sometimes have supefluous zeros in columns 1 through 6). Previously, ENDFtk flagged these directory records as errors. This has been corrected, although these columns will still be left blank when printing them out (in the same way as END records).
• Some ENDF decay data files (such as found in the JENDL-5 decay library files) also seem to use ENDF LIST records with NPL=0 for the decay modes of stable isotopes where the ENDF manual states that is should be NPL=6 with all zeros in the list. ENDFtk previously flagged these as erroneous. Now ENDFtk will issue a warning and create the ENDF LIST record that the manual says it should be. In addition to this change, ENDFtk now allows the use of NT=10 for the specification of discrete spectra.
• A minor bug in the rectangular matrix covariance block was corrected. The values for the row and column energies are lifted out of a larger array using the std::ranges::take and std::ranges::drop function. For the column energies, we forgot to properly end the sequence. As a result, the end() iterator of the range did not point to the end of the column energies but to the end of the covariance values, which is now corrected.
• In MF8 MT457 DiscreteSpectrum, NT=8 (which can occur for electrons, i.e. STYP=8), was explicitly disallowed by ENDFtk. This was corrected and a new constructor reflecting this usage was added as well.
• The STA variable in MF1 MT451 was interpreted incorrectly and this has now been fixed. An additional isUnstable() function has been added to the interface.
• The NJSX value (the number of spin groups) is now read from the CONT record before the particle pairs in MF32 R-matrix limited uncertainties since SAMMY does not print the NJSX value on the particle pairs (the ENDF format basically has the NJSX value appear in two places and ENDFtk used the second one while SAMMY only prints out the first one). This "breaks" some interface functions (the R-matrix limited uncertainties from_string() function now requires the number of spin groups while previously it did not).
• In MF28 MT533, the electron population was being returned as an integer value while this can be a floating point value. This has been corrected.
• All electron subshell identifiers in MF26 MT533 are returned as an integers.
• gcc-12 optimisation caused issues with MF8 MT457 values to not be properly initialised upon reading the section as a string. While this particular issue was corrected, caution is advised when using gcc-12 on Mac arm64 systems as similar issues may still be present in other parts of the library.
• The MacOS 15.2 system include libraries seem to define a TAB1 and TAB2 macro, which causes a compiler error in ENDFtk since we define aliases for the TAB1 and TAB2 record. These aliases are not used in any of the ENDFtk source code so we removed them to fix the issue.
• A bug was fixed for MF1 MT451 descriptions strings when they did not include a terminating new line character

The range-v3 dependency has been removed and replaced with a partial implementation of the C++20 and C++23 ranges standard (see the tools dependency release notes for more information). This change has no impact on functionality.

A few updates were made in the CMake files and a few source files for Windows compilation issues. We now also use shacl_cmake to be in line with ACEtk.

The GitHub CI was also updated: macos-14 (arm64 architecture) was added in addition to macos-13 (intel architecture).

The version of the tools dependency and the pybind11 dependency was upped to the latest release (no functionality changes result from these dependency changes).

Valgrind testing was added to the GitHub CI to detect memory issues in the future.

ENDFtk v1.1.0

This update adds additional interface functions to complete the human readable and ENDF speak interface for many objects:

• the NBT() and INT() interface functions to complement the boundaries() and interpolants() functions already present in TAB1 and TAB2 style components
• the numberInterpolationRegions() functions to complement the NR() function already present in TAB1 and TAB2 style components.

This update fixes the following issues:

• Older versions of ENDFtk sometimes read numbers like '2.0000000+0' as 1.999999999 instead of 2. The disco library was replaced with a new version included in the tools library that fixes this issue. In addition to fixing this issue, parsing ENDF files is now 10-20% faster.

ENDFtk v1.0.1

This update does not add any additional functionality.

This update fixes the following issues:

• A compilation issue in a unit test that still used the old catch-adapter (see issue #193).
• Macros for pybind11 were added where required so that other pybind11 bond libraries can accept ENDFtk components as input arguments on the python side (e.g. covariance matrice blocks). This is currently limited to all ENDFtk section components.

ENDFtk v1.0.0

This release of ENDFtk has the following changes:

• All ZA values in the interface (the ZA value in the HEAD records, the ZAP values in the MF6 and MF26 reaction products, etc.) are now changed to integer types instead of a floating point type
• MF6 and MF26 now have additional functions that allow a user to look for specific reaction products
• MF9 and MF10 now have additional functions that allow a user to look for specific excited states

The CMake files have also been updated to simplify adding new unit tests.

This release cleans up some of the dependencies and updates most of the dependencies to more recent versions. In particular the Catch2 unit testing framework was updated to version 3.3.2. All unit tests were updated to use better floating point comparison available in this version of Catch2. A number of NJOY dependencies have also been consolidated into a single new dependency (the NJOY tools library) to reduce the number of dependencies to a more manageable level.

ENDFtk v0.5.0

New features:

• covariance data in MF31, MF32, MF35 and MF40
• the new MF7 MT451 section for general information about thermal scattering
• adding a few convenience constructors in MF3, MF9 and MF10 sections
• adding convenience has_section(mf,mt) and section(mf,mt) functions to the ENDF tree components

Note: the development priorities after this release will be outstanding minor updates and updates to the dependencies. After that, with the ENDFtk functionality being almost 100% complete, some refactoring on the interface may lead to deprecation in future releases.

ENDFtk v0.4.0

New features:

• The ENDFtk tree Section object now contains its own content string (previously the Tape object contained the entire content and the underlying Material, File and Section had iterators into the Tape content). This was done to allow for editing existing ENDF files by allowing insertion, replacement and removal of individual Material, File and Section objects from a Tape.
• Added a function to update the directory in MF1 MT451
• The basic ENDF records (TEXT, CONT, LIST, TAB1, TAB2, etc.) now have a python interface as well
• Duplicate MEND, FEND and SEND records are now ignored (a warning message will be printed when this happens)
• Full MF23, MF26, MF27 and MF28 capabilities for photoatomic and electron data
• Full MF33 cross section covariance and MF34 angular distribution covariance capability

ENDFtk v0.3.0

New features:

• ENDFtk now supports the enumerated MF8 sections for fission yield data
• Full MF9 and MF10 capabilities for radioactive isotope production cross sections and branching ratios
• Full MF12-MF15 capabilities for photon production data

Notes:

• The ranges v3 library was updated to one of the latest releases, which removed some of the issues we have been seeing in the past with some g++ compiler versions (mainly g++-8 and g++-9). This update also slightly improved compilation time and memory usage during compilation.

ENDFtk v0.2.1

Fixes:

• Explicit include statements for std::optional were added to resolve issues with the C++ standard library used on our GitHub actions.

Notes:

• All ENDFtk unit tests will now run every Monday.

ENDFtk v0.2.0

New features:

• Full Python support
• Tape and Material support, including skipping unsupported MF/MTs while parsing entire tapes and materials
• Full MF1 capabilities

Notes:

• Some fringe interface changes were made in MF4/MF5/MF6 to provide a better interface

ENDFtk v0.1.0

First release of ENDFtk