This file describes changes in the cvec package.
2.
8.
4 (
2025-
06-
20)
- Janitorial changes
2.
8.
3 (
2025-
01-
03)
- Fix compilation with GCC
15
- Various janitorial changes
2.
8.
2 (
2024-
08-
27)
- Require GAP >=
4.
12
- Don't attempt to read non-existing files
- Various janitorial changes
2.
8.
1 (
2023-
03-
28)
- Adjust `CompanionMatrix`, `NewCompanionMatrix` output
to match the GAP documentation (i.e., transpose it compared
to what was returned before)
2.
8.
0 (
2023-
03-
22)
- Adjust to revised MatrixObj interface in GAP
4.
13
- Various janitorial changes
2.
7.
6 (
2022-
08-
06)
- Fix a bug converting vectors defined over large (non-internal) finite
fields to cvec format
- Various janitorial changes
2.
7.
5 (
2021-
09-
06)
- Require GAP version >=
4.
10
- Replace buildsystem with the "standard GAP package buildsystem"
based on Makefile.gappkg, for quicker and more robust compilation
- Various janitorial changes
2.
7.
4 (
2019-
07-
17)
- Improve compatibility with upcoming GAP
4.
11 (replace uses of
IsRowVectorObj by IsVectorObj, and of BaseField by BaseDomain)
2.
7.
3 (
2019-
07-
11)
- Rewrote build system to use gac, not autoconf/automake/libtool
- Improve compatibility with upcoming GAP
4.
11
- Various janitorial changes
2.
7.
2 (
2019-
03-
20)
- Removed the (undocumented) Fold and Unfold method
- Clarify the licensing terms again
2.
7.
1 (
2019-
02-
23)
- Fixed an incompatibility with GAP version >=
4.
11
2.
7.
0 (
2019-
02-
19)
- Require GAP version >=
4.
9
- Clarify that license is GPL
2 *or later* (as agreed with Max N.)
- Internal: stop using the GAP kernel variable PolsFF
- Fix error viewing empty semiechelon matrices (patch provided by Frank
Lübeck)
- Fix bug in MinimalPolynomialOfMatrixMC which could lead to an infinite
loop for certain inputs, in particular lower triangular matrices with
multiple eigenvalues (patch provided by Frank Lübeck)
- Add methods to allow access to cmats via `mat[i,j]`
- Various janitorial changes
2.
6.
1 (
2018-
06-
07)
- Workaround a linker issue with GNU ld
2.
30
- Improved build system when using GAP >=
4.
9
2.
6.
0 (
2018-
03-
20)
- Fix crash in CLEANROWKERNEL
- Fix link to issue tracker in manual
- Adapt to changes in GAP's MatrixObj interface (to appear in GAP
4.
9)
- Convert README to markdown
- Various other internal fixes and improvements
2.
5.
7 (
2017-
08-
01)
- Remove CompatibleMatrix method (this *undocumented* API will be
removed in GAP
4.
9)
- Fix several broken references in the manual
2.
5.
6 (
2016-
11-
08)
- Fix a bug reported by Jan De Beule which resulted in cvec incorrectly
converting certain GAP matrices to cvec matrices.
2.
5.
5 (
2016-
03-
08)
- Maintenance release
2.
5.
4 (
2015-
12-
18)
- Some functions accept slightly more general input. For example, it
is now in some cases acceptable to use finite field elements like
Z(
4)^
0 (which is equal, but not identical, to Z(
2)^
0) as input when
cvec is expecting elements of GF(
2).
- Fix EmptySemiEchelonBasis: its documentation said it expects a
sample vector, but the implementation expected a sample matrix. Now
both are possible, and both are documented.
- Fix some errors in the manual.
- Move website to
https://gap-packages.github.io/cvec/
- Stop using GenericHashFunc_C (formerly provided by the orb package)
2.
5.
3 (
2014-
11-
08)
- Tweak the build system to avoid potential issues when the source
code gets repackages by third parties (e.g. by the GAP team, when
creating their big package archives)
2.
5.
2 (
2014-
09-
24)
- Fix some minor issues in the documentation
- Remove some leftover GAP
4.
4 compatibility code
- Update Max Neunhoeffer's contact data
- Use AutoDoc to generate title page of the manual from PackageInfo.g
- Add Max Horn as a maintainer
2.
5.
1 (
2014-
04-
04)
- Previous release had an invalid release date in
PackageInfo.g (
2014-
04-
31 instead of
2014-
03-
31).
- Merge HISTORY and CHANGES files.
2.
5 (
2014-
03-
31)
- Add methods for \^ for cvecs and Frobenius automorphisms
- Add methods for \^ for cmats and Frobenius automorphisms
- Fix a bug in unpickling semi echelonised bases
- Update and tweak the package build system
- Move package repository and website to GitHub
2.
4 (
2012-
09-
14)
- Fix an ELMS_LIST bug for CMats reported by Felix Noeske
2.
3 (
2012-
07-
13)
- Fix CMat bug: used to not ShallowCopy its first argument
- Fixed DuplicateFreeList and Filtered bug for CMats.
2.
2 (
2012-
05-
28)
- Compile manual against GAP
4.
5.
4.
- Add script "configure_like_gap".
- Adjust README and installation instructions.
2.
1 (
2012-
02-
03)
- Fix a serious bug in MinimalPolynomialMC for matrices over finite
fields. WARNING: Wrong results were produced by version
2.
0!
2.
0 (
2012-
01-
31)
- Improve implementation of MinimalPolynomialOfMatrixMC and use it
as a method for MinimalPolynomial for row list matrices.
Document it for the first time.
- Completely change build setup to use automake/autoconf/libtool as
done in the IO package.
1.
8 (
2011-
03-
24)
- Slightly improved minimal polynomial routine by suggestion of
referee.
- Use C-Hashfunction of orb
3.
0 if it is there.
- Many optimisations for GF2
- Faster ScalarProduct for GF2
- Fast EntryOfMatrixProduct for prime fields
- Fixed configure script to work with GAP
4.
5 without breaking
4.
4.
- Fixed a bug with zero length matrices introduced after
1.
7
- Added a Length method for semi echelonised bases
- Documented the Vectors operation for semi echelonised bases
- Put revision
402 as version
1.
8 on the web
1.
7 (
2007-
09-
26)
- Introduce filters for cmats and cvecs to distinguish cases of q=p
and q <= MAXSIZE_GF_INTERNAL.
- Kernel method for cmat row access
- Operation ScalarProductsRows with kernel method for prime fields
used for condensation
- Fixed infinite recursion in matrix multiplication because of
Winograd method.
- Fixed problem of polynomial factorisation over "DefaultField"
instead of BaseDomain in Minimal and Characteristic polynomial
routines.
- New method for SumIntersectionMat for cmats.
- Use constructors for new objects in new interface, implement them.
- Change all addresses to St Andrews.
- Require GAP >=
4.
4.
9
- Tune vector matrices interface and polish implementation.
- Added a pickling/unpickling method for semi echelon basis.
- Quite a few little changes to the vector/matrix interface
after discussions in Braunschweig.
- Make TraceMat compatible with GAP4R4.
- Added matobjplist.g* from the dev library for compatibility with
4r4.
- Put revision
324 as version
1.
7 on the web.
1.
6 (
2007-
04-
02)
- Improve MinimalPolynomialMC, change calling convention.
- Fixed a dangerous bug in matrix multiplication using the
memory-saving Winograd trick.
- Better Value method for CMats (do nothing a human would not also do)
- Put AddMatrix and MultMatrix into interface and implement it for cmats
- Put revision
298 as version
1.
6 on the web.
1.
5 (
2007-
02-
07)
- Improve usage of grease, in particular for level
1 for
2 < q <
257
- Improve FILL_GREASE_TAB by using trick coming from analysis: we only
have to multiply a few times by the primitive root, not by powers of it.
- Fixed a serious bug in SemiEchelonBasisMutableTX which occurred if
the first row of the matrix was zero.
- New operation CompanionMatrix (not yet documented)
- GreaseCalibration for different machines (not yet documented)
- Winograd trick for multiplication, corresponding calibration function
- Put copyright and licensing information in all files.
- Add version number to archive name, fixed some things in PackageInfo.g.
- Put revision
280 as version
1.
5 on the web.
1.
4 (
2006-
11-
29)
- Adjust to new buffered I/O.
- New operation ChangeBaseDomain with methods for cvecs and cmats.
- Put revision
212 as version
1.
4 on the web.
1.
3 (
2006-
09-
01)
- change nearly everything to the new vector/matrix interface
- implement new Intersection functionality no longer using Zassenhaus
- allow for more than one package with a C-part
- added test/polynomials.g to check characteristic and minimal polynomials
- added Memory for cvecs and cmats and to interface
1.
2 (
2006-
08-
18)
- ?
1.
01 (
2006-
06-
08)
- ?
1.
0 (
2005-
06-
28)
- Initial release