Hello, Gonzalo.
You wrote 3 мая 2010 г., 20:46:41:
Although I'm more of a GPL (v2) type, and I wouldn't write BSD code
unless I had a very good reason, I could consider relicensing some
interface code like this.
I've actually relicensed this code to LGPL v2+ (for gmpy), but I'm not
sure I
Hello, rjf.
You wrote 4 мая 2010 г., 19:21:42:
Note that converting (in applications of these Lisp programs) to gmp
integers and back is not something you do very often.
It depends on problems you solve. It may be one of the short operands
and long accumulator kind. Or it just
Hello, William.
You wrote 4 мая 2010 г., 22:34:58:
Could you write a little more to sage-devel about why mathematicians
might care about support vector machines -- it's possible that most
people reading this have never heard of them.
Being sage-devel reader for a while I may say that
Hello, William.
You wrote 5 мая 2010 г., 16:43:39:
Yes, numerical analysis is definitely really, really needed in Sage.
In fact, it is likely to be by far the most important part of Sage in
the long run.
Ithinkthat I should look in this direction... I hope to
implement Python
Hello, William
by the way, what do you think about using in SAGE both double and
multiple precision versions of ALGLIB?
I have fully functional multiple precision version of ALGLIB which
relies on MPFR for floating point computations. It includes multiple
precisionlinear
Hello, William.
My first thought is that it would be *awesome* to have _efficient_
multiprecision linear algebra, etc., in Sage.
This is the sort of thing people expect from Sage, but are often
disappointed to find that we don't have.
As for the efficiency, I may say that
Hello, Francesco.
Just FYI, you might want to look into C++ expression templates - they
might allow you to retain the convenient notation with no overhead.
I know about expression templates, but even with templates sometimes
creation of temporary is the only way to calculate value of a
Hello, Francesco.
You wrote 9 мая 2010 г., 20:06:24:
If the expression is to be intended like this:
for i in (0,size):
x[i] =((a[i] + b[i]) * (c[i] + d[i]) - e[i]) / (f[i] + 3)
(i.e., element-wise), then I'm pretty confident expression templates
could eliminate all temporaries.
I am
Hello, William.
You wrote 17 мая 2010 г., 22:13:46:
I have written to them about 20 times to get this changed.
Did they ever notice that license changed to LGPL 3, so there is
nothing to complain now? :(
BTW, MPIR team is thinking on developing whole new BSD-licensed
library.
Hello, Bill.
You wrote 18 мая 2010 г., 15:37:56:
The FSF notified us that it was their intention to try and get
Torbjorn to remove the outdated statements from his website about
MPIR. He hasn't done so.
And he never mentioned that license was changed to LGPL 3 mostly due
to his objections
Hello,
just want to say that at least I can sign such petition (if one day
you decide it is needed). Or to write this letter.
Good luck! I hope this issue will be resolved once and for all.
--
With best regards,
Sergey mailto:sergey.bochka...@alglib.net
--
To
Hello, Bill.
One eventually gets fed up, and I'm just announcing what I already
planned to do months ago.
I think you took the wrong hint. You did impressive and important job
which is appreciated by both SAGE and bignum communities. I know that
people sometimes get tired, but I hope that
Hello, Jason.
You wrote 21 мая 2010 г., 3:48:03:
A while ago someone talked about incorporating ALGLIB into Sage to
provide, among other things, multiprecision linear algebra.
It was me :) I am working on this issue. I expect that interface
between double precision ALGLIB and Python
correction to my previous message:
It leads to unnecessary allocation of temporaries and some
performance penalty (about 25-30% for 128-bit precision).
Sorry, I made a mistake when estimating MPLAKACK performance. 25-30%
are ALGLIB's, not MPLAPACK's.
I've never measured MPLAPACK
Hello, Bill.
Now, we are looking into why this isn't appearing on the title page of
the pdf documentation. That appears to be a technical issue! We will
also add The GMP Development Team as per the latest GMP
documentation.
I think that when you fix _everything_ someone still will be able
Hello, Bill.
So it is established that we are being accused of academic fraud for
removing the author information WHEN IT WAS DONE BY SOMEONE ON THE GMP
TEAM in the actual version of GMP we forked from!!
Confirmed.
I think what is currently on the GMP website is FAR more damaging to
the
Hello, Bill.
In fact, unless I am mistaken refresh your browser!
Now let's all forget this ever happened and let's get on with our jobs.
+1!
--
With best regards,
Sergey mailto:sergey.bochka...@alglib.net
--
To post to this group, send an email to
Hello, David.
Is license info available?
I've contacted Stephen Moshier several years ago and he made it clear
that anyone can use Cephes under any license (as long as copyright is
preserved).
I think that someone can contact him and ask for the explicit
permission to license Cephes
Hello, SAGE developers!
I have a question about C standard which SAGE packages should conform
to. Is it C99? Plain ANSI C? Modern ANSI C, i.e. ANSI C which
borrowed several features from C99?
I am working on Python=ALGLIB interface with intention to make it
usable from SAGE. It
Hello,
thanks to all who've replied to this discussion!
Taking into account what was said above, I've decided to target
pure
ANSI C, i.e. C without newer constructs like // comments and
other
stuff from newer standards. I don't want to use C99 because it
isn't
supported by MSVC (de facto
Hello, Robert.
You wrote 10 июня 2010 г., 7:58:49:
I'd be glad to know exactly what is special about writing ALGLIB
that's more difficult to do with using Cython.
I can't say that it is difficult to do with Cython. I just want to say
that for me - and just for me - Cython has no benefits over
Hello, David
You wrote 10 июня 2010 г., 15:25:03:
It would be great if you could check your code with the Sun Studio
compiler, which you can get for free for Linux or Solaris.
It is not great, it is must-have. Building ALGLIB on every platform
where SAGE builds and with every popular
Hello,
Having checked again, __sparc is preferable. That is supported by gcc, g++, cc
and CC (the Sun compilers)
Thanks a lot!
I've also got machines running AIX, tru64, HP-UX and IRIX. None of
the CPUs in those sorts of machines would support SSE. Clearly there
are many system which
Hello, Bill.
You wrote 22 июня 2010 г., 3:30:30:
BSDNT
..
scratch. One idea I had was to write all the low level routines in
LLVM instead of assembly, then just build suitable optimisations into
LLVM so that nice assembly is automatically produced. This is entirely
feasible and would
Hello!
I've talked about making Sageable interface to ALGLIB two months ago.
It took twice as much time as I previously thought, but now it is
ready to go public.
You can download first beta of ALGLIB double precision interface (as
.spkg or .zip file) from
Hello, Jason.
You wrote 9 июля 2010 г., 15:34:07:
On OSX 10.6.4, I get an error:
...
...
This looks like it might be useful, but I don't know:
http://lists.apple.com/archives/unix-porting/2003/Oct/msg00032.html
I think that it is easy to fix, thanks for the link you gave me. The
only
Hello, David!
Thanks for your reply, it was very useful.
You wrote 10 июля 2010 г., 1:47:31:
1) It does not work on Solaris 10 on SPARC - see below. I suspect
there are some GNU-specific linker options, which will fail if the
Sun linker is used on Solaris 10.
Looks like it is actually
Hello,
I have a question about spkg-check file. When does it executed - after
spkg-install call or independently of it?
--
With best regards,
Sergey mailto:sergey.bochka...@alglib.net
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To
Hello, William.
You wrote 16 июля 2010 г., 17:12:53:
I have a question about spkg-check file. When does it executed - after
spkg-install call or independently of it?
After.
So if spkg-check is executed, I can be sure that spkg was successfully
installed into system?
--
With best regards,
Hello, Dr..
You wrote 16 июля 2010 г., 17:37:25:
So if spkg-check is executed, I can be sure that spkg was successfully
installed into system?
Not exactly, as some packages unfortunately ignore errors, so if the package
fails to install, you will not know it.
I am talking about my own
Hello!
Second beta of ALGLIB.spkg is ready. It can be downloaded from
http://www.alglib.net/share/2010-07-26-alglib-for-sage/
Following issues were solved in this release:
* compilation on SPARC/Solaris
* missing support for SAGE64
* trashing of SAGE_LOCAL with additional dirs
Issues
Hello, Carl.
Here is some documentation about Python-ALGLIB interface (called
X-interface in this document):
http://www.alglib.net/share/2010-07-26-alglib-for-sage/x-interface.pdf
It is very short, but should give a hint about meaning of all these
functions, expectations,
Hello, Carl.
You wrote 3 августа 2010 г., 6:39:49:
I've attached a patch to make alglib allow input in the following formats:
* boolean vector/matrix: GF(2), RDF, numpy.bool, numpy.float64
* integer vector/matrix: RDF, numpy.int32, numpy.float64
* real: RDF, numpy.float64
* complex: CDF,
Hello, David
You wrote 4 августа 2010 г., 14:49:47:
8:
sage: maxima('asinh(1.0)')
Expected:
0.881373587019543
Got:
.8813735870195429
Clearly there is some numerical noise issues, which need to be
investigated, but are probably trivial.
I think that it is more than
Hello, Carl.
You wrote 3 августа 2010 г., 6:39:49:
On Wed, Jul 28, 2010 at 11:38 PM, Sergey Bochkanov
sergey.bochka...@alglib.net wrote:
My proposal is to make
* boolean vector/matrix = GF(2), RDF (non-zero = True)
* integer vector/matrix = RDF
* real = RDF
* complex = CDF
One more
Hello, Carl.
You wrote 3 августа 2010 г., 6:39:49:
On Wed, Jul 28, 2010 at 11:38 PM, Sergey Bochkanov
sergey.bochka...@alglib.net wrote:
My proposal is to make
* boolean vector/matrix = GF(2), RDF (non-zero = True)
* integer vector/matrix = RDF
* real = RDF
* complex = CDF
Forgot
Hello, Jason.
You wrote 5 августа 2010 г., 20:17:11:
(depending on problem and its stability properties). However I don't
know how to do it using doctest framework. Python tries to output
numbers with full precision,and there is no way to tell doctest
framework to compare decimal
Hello, David.
You wrote 5 августа 2010 г., 20:44:53:
With all the numerical noise issues I've seen in Sage, the three dots
solves its. So if we expect
1.00
but get
1.01
we can change that to
1.0...
and the test will pass.
However, what if we get
Hello!
New version of ALGLIB spkg is released. It can be downloaded from
http://www.alglib.net/share/2010-08-09-alglib-for-sage/
New version of spkg:
* compiles under OS X, SPARC/Solaris, Linux
* was tested wuth 2.7 and 3.1.2 branches of Python
* includes patch by Carl Witty
Hello, Carl.
You wrote 9 августа 2010 г., 19:58:12:
Add this line at the top of check.py:
import sage.all
Thanks!
I've added it on top of _alglib.py because
a) check.py, as every other file, explicitly imports _alglib.py
b) I prefer to modify one file instead of two
Apparently, it works
Hello, Rob.
You wrote 11 августа 2010 г., 1:10:25:
I have an undergraduate student who is funded this summer to develop
some routines for Sage which create random matrices with nice
properties for beginning students of linear algebra to practice with
(or for faculty to put on exams, or to put
Hello, Jason.
You wrote 13 октября 2010 г., 8:16:15:
I'm curious what the current status of the alglib spkg is---anyone know?
Works were paused for a while (I've spent all August and September
working on ALGLIB 3.0 for C++ and C#), but I don't want to abandon
this project. I plan to
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