On Thu, Nov 04, 2004 at 08:32:52PM +0100, Sven Panne wrote:
It's an old thread, but nothing has really happened yet, so I'd like to
restate and expand the question: What should the behaviour of toRational,
fromRational, and decodeFloat for NaN and +/-Infinity be? Even if the report
is unclear
With GHCi, I get:
Prelude Ratio toRational (1.0/0) :: Ratio Integer
My guess is because irrationals can't be represented on a discrete
computer (unless you consider a computaion, the limit of which is the
irrational number in question). A single irrational might not just be
arbitrarily long, but it may have an _infinite_ length representation!
What you have
On Fri, 5 Nov 2004, Robert Dockins wrote:
What IEEE has done is shoehorned in some values that aren't really
numbers into their representation (NaN certainly; one could make a
convincing argument that +Inf and -Inf aren't numbers).
I wonder why Infinity has a sign in IEEE floating
My guess is because irrationals can't be represented on a discrete computer
Well, call it arbitrary precision floating point then. Having built in
Integer support, it does seem odd only having Float/Double/Rational...
Keean.
..
___
In gmane.comp.lang.haskell.glasgow.user, you wrote:
Is anyone else seeing this on his system?
getUserEntryForName [] = print . userName
wasabi
Fixed in CVS -- I was only able to test this on SunOS where your
example would segfault.
--
http://www-i2.informatik.rwth-aachen.de/stolz/ *** PGP
On Fri, 2004-11-05 at 13:57, Henning Thielemann wrote:
On Fri, 5 Nov 2004, Robert Dockins wrote:
What IEEE has done is shoehorned in some values that aren't really
numbers into their representation (NaN certainly; one could make a
convincing argument that +Inf and -Inf aren't numbers).
Sven Panne writes:
/html/chunk.xsl happy.xml
warning: failed to load external entity /html/chunk.xsl
It looks like configure hasn't found a DocBook XSL
directory on your machine. Could you provide us with a
little bit more information, please (log of the configure
run, config.log,
[...] Thus (a-b) is not the same as -(b-a) for IEEE floats!
Nor is x*0 equal to 0 for every x; nor does x == y imply f(x) == f(y)
for every x, y, f; nor is addition or multiplication associative. There
aren't many identities that do hold of floating point numbers.
Yes, but they DO hold for
And some more information on the issue. When I run the
configure script, I see this error message on the screen
(which probably won't make it into the config.log output):
| checking for xmllint... /usr/bin/xmllint
| checking for DocBook DTD... ok
| checking for xsltproc... /usr/bin/xsltproc
|
Peter Simons wrote:
And some more information on the issue. When I run the
configure script, I see this error message on the screen
(which probably won't make it into the config.log output):
| checking for xmllint... /usr/bin/xmllint
| checking for DocBook DTD... ok
| checking for xsltproc...
Hi,
It has been common in recent years since the widespread use of package
management systems to break up configuration / settings files that are
used by several packages into a directory of individual files rather
than modifying a global file.
The advantage of doing this is that it makes things
On Fri, Nov 05, 2004 at 02:53:01PM +, MR K P SCHUPKE wrote:
My guess is because irrationals can't be represented on a discrete computer
Well, call it arbitrary precision floating point then. Having built in
Integer support, it does seem odd only having Float/Double/Rational...
There are
13 matches
Mail list logo
