Recent ChangeLog

This page describes changes in the repository after the latest release. The format is more or less the same as Keep a Changelog. It will be occasionally updated. See also the full git logs.

Changelog - FORM (Unreleased)

(As of 16 October 2024)

Added

• Many changes (TODO: demystify them).

  • diagram generation
  • floating point numbers
  • ...

• Partially implemented #continuedo (#443).

Changed

• Format Mathematica now encloses dot products (#472) as well as entire expressions (#491) in parentheses. Example:

  V p,q;
  L F = (1 + p.q)^3;
  Format Mathematica;
  P +s;
  .end
  

     F = (
         + 1
         + 3*(p.q)
         + 3*(p.q)^2
         + (p.q)^3
        );
  

  This change avoids problems caused by syntax differences between FORM and Mathematica.

• Print a warning when saving expressions with too-long names (over 16 characters), which are truncated in .sav files (#500, #503, #555).

Fixed

• Fixed ModuleOption to correctly parse PolyFun f or PolyRatFun f (#473).

• Fixed a memory error caused by workspace overflow during optimization (#481).

• Fixed PolyRatFun bugs due to an incorrect clean flag (#482).

• Fixed a memory error caused by an array index being out of bounds when printing an empty set by On names/On codes (#487).

• Fixed a memory error in RemoveSpectator after making holes in the spectator array (#488).

• Fixed crashes in pattern matching when argument wildcards match with more than 8191 arguments (#490, #519).

• Fixed data races in TFORM thread statistics (#493).

• Fixed a freeze bug in parsing complex conjugate operators (#502).

• Fixed a memory leak in the MakeInteger statement associated with handling terms with multiple instances of target functions, which has been present since version 4.2.0 (#509).

• Fixed possible buffer shortages in sorting function arguments and dollar variables (#515).

• Fixed bugs in Transform that caused crashes for mulargs when the result size was large (#516).

• Fixed bugs that led to crashes/nonsense results in TFORM with PolyRatFun (#517).

• Fixed typos in error messages for the #breakdo instruction (2319a49).