[plt-scheme] Re: image manipulation

From: John Clements (clements at brinckerhoff.org)
Date: Thu Mar 25 11:46:25 EST 2004

On Mar 25, 2004, at 8:30 AM, John Kozak wrote:

>   For list-related administrative tasks:
>   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>> FWIW, SRFI 4 provides unboxed arrays of numbers, including 32-bit &
>> 64-bit floating point representations.
> To sneak in a pet moan of mine, the sgl collect has its own, parallel
> implementation of this - it would be nice if they got unified.

I agree. The fly in this ointment is that--as I understand it--the GL 
code insists on using one name to refer to different underlying 
representations, whereas the SRFI 4 code (adapted from the GL code, as 
it happens) does not.

To be more concrete:  the C code for the GL library uses the name 
gl_foobar_number, say, to refer to a 64-bit float on some platforms and 
a 128-bit float on other platforms.

I agree that this problem is not insoluble; unfortunately, the authors 
of the SRFI-4 and sgl implementations (myself and Scott Owens, 
respectively) have not collaborated to resolve the issue.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2379 bytes
Desc: not available
URL: <http://lists.racket-lang.org/users/archive/attachments/20040325/0264b74e/attachment.p7s>

Posted on the users mailing list.