Re: [Tinycc-devel] compile time "exotic" floating-point constants

[Tomas Lindquist Olsen]

Thank you!

On Thu, May 6, 2010 at 2:22 AM, Thomas Preud'homme <address@hidden> wrote:
> On Wednesday 05 May 2010 23:13:01 grischka wrote:
>> Someone please push this patch?  Thanks,
>>
>> --- grischka
>
> Done.
>>
>> Tomas Lindquist Olsen wrote:
>> > Hi all.
>> >
>> > I'm working on a compiler project where one of our targets is C, for
>> > this I've found TinyCC very interesting and useful.
>> >
>> > There was one issue though, which was not being able to (or at least I
>> > couldn't figure out how) to use special floating-point constants like
>> > NaN in a fashion that is truly a compile time constant.
>> >
>> > So I made a patch (against the last stable release). I'm not used to
>> > Git, and failed to get it working on my Windows7 machine, so I hope
>> > it's OK to provide a patch here.
>> >
>> > Of course I'd like to know if there's a possibility to get the patch
>> > included in the official repo, and if not, maybe we can find some way
>> > to let me do what I want.
>> >
>> > Basically the patch adds three new special-identifiers: __nan__ ,
>> > __snan__ and __inf__ . All have the type 'double' and are quiet-nan,
>> > signaling-nan and infinity. Other types can simply cast, like
>> > '(float)__nan__'.
>> >
>> > A more flexible alternative is a kind of builtin, like
>> > '__builtin_hex_double(0x7ff0000000000000)' etc. If this would be more
>> > desirable I can make a patch with that instead.
>> >
>> > Let me know what you think, patch is attached.
>> >
>> > Regards,
>> > Tomas Lindquist Olsen
>>
>> _______________________________________________
>> Tinycc-devel mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/tinycc-devel
>
> _______________________________________________
> Tinycc-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/tinycc-devel
>
>