1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
Thu Nov 7 11:31:58 MET 2002 Hans Schoenemann <hannes@mathematik.uni-kl.de>
interface to NTL (optional, recommended): tested with NTL 5.2, 5.3
bug fixes for multivariate factorization
Tue Apr 10 15:24:49 CEST 2001 Hans Schoenemann <hannes@mathematik.uni-kl.de>
several small bugs fixed (mostly memory leaks)
changed copyright to GPL
Tue Oct 28 14:46:08 1997 Jens Schmidt <schmidt@mathematik.uni-kl.de>
New features in Factory, version 1.3b:
======================================
Distribution and organization level:
------------------------------------
o The new external variable `factoryConfiguration' describes the
configuration Factory has been translated with.
o If configuring for cross compiling `configure' assumes that the target
machine has arithmetic shift.
o Parts of Factory are written using `folding-mode' for GNU Emacs. Since
this is a really useful feature `folding.el' has been added to the
distribution.
o The new `make' target `installtest' in the top level `GNUmakefile' tests
whether the installation has been successful.
o The new directory `examples/' contains some example applications for
Factory and a `GNUmakefile' to build them.
Source code level:
------------------
o The main interface to Factory, the class `CanonicalForm' has been (almost
completely) revised. During this process, a number of smaller bugs has
been fixed (most of the bugs concerning some more or less exceptional
cases). Furthermore, many of the methods became a little bit faster,
some of them became a lot faster (e.g., the evaluation-`operator() ()' uses
Horner's rule now, `degree( const & Variable )' and `deriv( const &
Variable)' do not use expensive calls to `swapvar()' any longer).
o In the same way, I have begun to revise the gcd calculations, but there is
still is a lot of work to do. As a first result, gcd calculations over Z
became faster (up to a factor of two for large examples).
Other bug fixes:
o A serious bug in `resultant()' has been fixed.
o `gcd()' works correctly now for polynomials with rational coefficients.
However, `factorize()' still does not, and you have to multiply with the
common denominator before factorizing.
o `psr( CF f, CF g, Var x )', `psq()', `psrq()' work correctly now if
degree(f) < degree(g). However, they still do not work correctly if
either in divisor or dividend occur variables with level higher than
x's level.
o A bug in `CanonicalForm::sqrt()' has been fixed which in some cases made
`factorize()' crash.
Changes:
o If CO has not a denominator `CanonicalForm::den()' returns now the unity
from the current domain, not the unity from the domain of CO.
o `chineseRemainder()' works now for polynomials over Z instead for elements
of Z only.
o `cden()' computes the common denominator with respect to algebraic
variables, too, so multiplying with `cden()' in any case results in an
object with integral coefficients
New features:
o The new function `subResChain()' returns the extended subresultant chain
of two polynomials.
o The new function `replacevar()' replaces one variable with another. In
contrast to `swapvar()', this works for algebraic variables, too.
o The new function `size()' returns the number of monomials occuring in a
`CanonicalForm'.
o The new method `CanonicalForm::Lc()' returns the leading coefficient of
CO, where elements from an algebraic extension are considered
coefficients, and not polynomials.
Thu Jul 17 10:15:59 1997 Jens Schmidt <schmidt@mathematik.uni-kl.de>
New features in Factory, version 1.3a:
======================================
Besides minor changes at "source code level" (bug fixes, new features)
which are not really visible to the user in general there are quite a lot
of changes at "organization level" (aka "preprocessor level") and at
"distribution level" (`configure', `GNUmakefile').
Source code level:
------------------
o Serious bug in univariate factorization in characterstic 0 fixed (by
Ruediger Stobbe).
o New gcd algorithm (sparse modular), not fully tested by now (contributed
by Marion Bruder). Switch on with `SW_USE_SPARSEMOD'.
o Various minor bug fixes.
Organization level:
-------------------
o Factory translates now on Macintosh with Metroworks
CodeWarrior Academic Pro 11 (changes by Wilfred Pohl)
o So called "new" memory manager (written by Ruediger Stobbe) added to
distribution. So far no timigs available which memory manager is faster.
o "ASSERT", "DEBOUT", "TIMING macros" streamlined
o Factory's IO completely re-organized (that was a mess!). It is now
possible to switch off everything which is related to stream IO (use
`--disbale-streamio' option to `configure'). This way it is possible to
link Factory without `libg++.a' or `libiostream.a'. Changes include:
- everything related to stream IO wrapped by `#ifndef NOSTREAMIO'
- all error messages/debug output messages rewritten so that they use the
"ASSERT" and "DEBOUT macros"
- furthermore, it was necessary to change the way the GF(q) tables are
read. As a consequence, the format of the GF(q) tables slightly
changed, too. You have to generate/get them from net by new.
Distribution level:
-------------------
o The organization of the distribution as well as the compile/install
procedure totally changed. It is now more GNU-like. See the `INSTALL'
file and the `README' file for more information.
o The file names of the template sources changed. To make them less
canonical, all names are prefixed with `ftmpl_' ("Factory template") now.
o The installation target directories and their structure changed a little
bit. See the `INSTALL' file for more information.
Before May 3 1997 Jens Schmidt <schmidt@mathematik.uni-kl.de>
New features in Factory, version 1.2c:
======================================
Version 1.2c is a more or less inofficial version distributed with
Singular 1.0. I hope it does not distribute too far... The description of
new features to version 1.3a cope the description of new features to this
version.
|
