On Sat, Sep 06, 2008 at 09:31:02PM +0200, Florian Klaempfl wrote:
>>
>> What would I need to do to release it under the same license as
>> other FreePascal libraries?
>
> Post the sources somewhere using the license header we use?
I intend to do just that. I was considering the use of plain GPL,
rather than LGPL. However, I wonder if that would interfere with the
incorporation into FreePascal.
Is it the case that all FPC libraries use (a variant of) LGPL?
I am willing to use that license, but if GPL is an option, I would
prefer that.
>> Would there be any interest in incorporating it?
>
> If it's endian safe and if there are tests, I propose to incoperate it
> in math.
The old version initially was not, and the next version resolved
that through conditional compilation. It used a set-of construct
to access the bits of floating-point numbers.
The current version is safe on most "reasonable" processors.
Let me explain. I use 32-bit (Cardinal) and 64-bit (QWord) integers
to access the bits of Single/Double values. The IEEE 754 standard
format for floating-point numbers was specifically designed to allow
the use of some integer operations on the representation to implement
some floating-point operations, because this gives an opportunity to save
on hardware. In particular, succ and pred on the floating-point number
bit pattern _interpreted_as_integer_ will yield the next larger/smaller
floating-point number.
Therefore, I believe that my current implemenation is endian-safe
on processors that exploit the IEEE 754 standard wisely.
In particular, I tested it on Intel and PowerPC (which have opposite
endianness; though PowerPC can switch endianness).
The unit comes with a separate test driver. There are also some examples.
Tom
--
E-MAIL: T.Verhoeff @ TUE.NL | Dept. of Math. & Comp. Science
PHONE: +31 40 247 41 25 | Technische Universiteit Eindhoven
FAX: +31 40 247 54 04 | PO Box 513, NL-5600 MB Eindhoven
http://www.win.tue.nl/~wstomv/ | The Netherlands
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