[racket-dev] Release for v5.2 has begun

Fixed.

Some unsafe primitives were marked internally as "functional", but this
annotation was used with two different interpretations: sometimes as
"non-mutating", sometimes as "always produces the same result". The
`unsafe-vector-ref' primitive was marked as "functional" with the
former intent, but the compiler could use the latter interpretation to
move it past an `unsafe-vector-set!'. The solution, of course, is to
have two distinct annotations.

At Sun, 9 Oct 2011 15:02:13 -0600, Doug Williams wrote:
> I reloaded the older version of Racket on my Windows 7 computer and the
> radix-2 FFTs run fine there. I also tested both versions on my Macbook Pro
> (32 bit) and got the same behavior - correct results (plots) on 5.1.2 and
> bad radix-2 results (plots) on 5.1.900.1.
> code for the mixed-radix and radix-2. So, it isn't limited to Windows 7 or
> 64-bit.
> 
> Doug
> 
> On Sun, Oct 9, 2011 at 1:44 PM, Doug Williams
> <m.douglas.williams at gmail.com>wrote:
> 
> > I downloaded the latest pre-release version (5.1.900.1) to update the
> > science collection to use the new plot collection. The good news is that
> > that went very smoothly. The bad news is that some of my FFT routines seem
> > to be getting incorrect numeric results - at least the plots are very bad.
> > But, since all of the other plots seem fine, I don't see why these would be
> > any different.
> >
> > So, I suspect that something has changed that affects the numeric
> > calculations. It is just the radix-2 FFTs that are having the problem. They
> > do some low-level bit fiddling to do the in-place butterfly addressing for
> > the FFTs - using things like unsafe-fxlshift (which just looks unfriendly) -
> > so, I suspect something there. Are the any recent changes that would affect
> > these kinds of fixed-point operations?
> >
> > I've run the code under a previous version of Racket on a 64-bit Linux
> > (Scientific Linux 6.0) computer and a 32-bit Windows XP computer and get
> > correct results. So, I don't think it is simply a 32/64 bit problem - unless
> > it is limited to 64-bit Windows.
> >
> > Sorry that was kind of rambling and non-specific, but I was wondering where
> > to start looking at the problem or what would help someone else look into
> > it.
> >
> > Doug
> >
> >
> >
> > On Fri, Oct 7, 2011 at 10:19 PM, Ryan Culpepper <ryan at cs.utah.edu> wrote:
> >
> >> The release process for v5.2 has begun: the `release' branch was
> >> created for any work that is left and is now bumped to v5.1.90.  You
> >> can go on using the `master' branch as usual, it is now bumped to
> >> v5.2.0.1 (to avoid having two different trees with the same version).
> >>
> >> If you have any bug-fixes and changes that need to go in the release
> >> then make sure to specify that in the commit message or mail me the
> >> commit SHA1s.  You can `git checkout release' to try it out directly if
> >> needed -- but do not try to push commits on it (the server will forbid
> >> it).
> >>
> >> Please make sure that code that you're responsible for is as stable
> >> as possible, and let me know if there is any new work that should
> >> not be included in this release.
> >>
> >>      >> NOW IS THE TIME TO FIX BUGS THAT YOU KNOW ABOUT <<<
> >>
> >> The time between the `release' branch creation and the actual
> >> release is for fixing new errors that prevent proper functioning of
> >> major components and that show up during the preparation for a
> >> release.  You can also finalize piece of work that is not yet
> >> complete, but please avoid merging new features.
> >>
> >> Note that nightly builds will go on as usual (as v5.2.0.1), and
> >> pre-release builds will be available shortly at
> >>
> >>  http://pre.racket-lang.org/release/
> >>
> >> Please tell me if you think that this release is significant enough
> >> that it should be announced on the users list for wider testing.
> >> --
> >> Ryan Culpepper
> >> _________________________________________________
> >>  For list-related administrative tasks:
> >>  http://lists.racket-lang.org/listinfo/dev
> >>
> >
> >
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