> P.S. Is there a list of unsupported float functions that need to be
> implemented? The docs imply that you need help getting all the
> functions done.
Some Bessels, associated Legendre's (God! I 'm missing them a lot!),
hell loads of any spherical ones are missed. Some simpler ones (like sin, cos,
all hyperbolic, simple bessels, etc. are there)
> PPS. Suggestion. I think it would be helpful if when using "double",
> you should get a compiler error that says that double is not supported.
> Is this easy/possible?
Not easy, yet possible. gcc just implicitly makes doubles floats.
> PPPS. Bill, yes, mspgcc does support long long, and I'm using at least
> one. You can refer to doc.txt line 579 (section 5 memory API's) to find
> the supported data types.
>
>
> -----Original Message-----
> From: mspgcc-users-ad...@lists.sourceforge.net
> [mailto:mspgcc-users-ad...@lists.sourceforge.net] On Behalf Of Thomas
> Carley
> Sent: Wednesday, February 12, 2003 8:16 AM
> To: mspgcc-users@lists.sourceforge.net
> Subject: Re: [Mspgcc-users] Double data type?
>
>
> Would a fixed point representation work well here? If you use base 2
> (binary fixed point) it is very efficient. What is the range of data you
> need to represent, and with what precision?
>
> On Wed, 12 Feb 2003, Dmitry wrote:
> > 64bits doubles are not supported.
> > I have no plans to make this support.
> >
> > only 32bits IEEE754 floats are (somehow) suported.
> >
> > ~d
> >
> > On Wednesday 12 February 2003 00:17, Mark Stokes wrote:
> > > What happened to the double data type that was discussed earlier. I
> > > have found a need for it and was wondering. Here's my dilemma:
> > > I am using 8-digit 7-seg display to represent things on the screen.
> > > This means that if I want to represent a floating point number that
>
> is
>
> > > less than one like 0.9999999 I would have a number that is out of
>
> the
>
> > > bounds of the "float" data type. For example:
> > >
> > > float floatvar;
> > >
> > > floatvar = 0.99999999
> > >
> > > Then floatvar ends up == 1 which is not helping me. I need it to ==
> > > .99999999 because internally the controller can't deal w/ numbers
>
> (in
>
> > > this particular variable) that are >= 1.0.
> > > However, if I take the same code and put on Borland, and use
>
> "double's",
>
> > > then I get the intended result (floatvar ends up == to 0.99999999).
> > > {footnote: if I use float in Borland the same thing happens.}
> > >
> > > Any ideas on when "double" will be available? What about a new
>
> release
>
> > > of the win32 executables? Perhaps I'll get the gnu tree working so
>
> that
>
> > > I can make win32 releases, but right now I don't have the time to
>
> mess
>
> > > w/ that.
> > >
> > > Thanks
> > > -Mark
> > >
> > >
> > >
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