• Jeremie Pelletier <jeremiep gmail.com> Aug 04 2009
• bearophile <bearophileHUGS lycos.com> Aug 04 2009

Jeremie Pelletier <jeremiep gmail.com> writes:

Andrei Alexandrescu Wrote:

 KennyTM~ wrote:
 Andrei Alexandrescu wrote:
 http://www.reddit.com/r/programming/comments/975ng/diving_into_the_d_progra
ming_language_tdpl/ 


 (Don't tell anyone, but I plan to rewrite it.)

 Andrei


 What's a "so-called IEEE 754 double-extended 79-bit format"? :p


 Heck, I didn't know until I googled for it!
 
 BTW folks, please please vote the reddit link up. It's a simple and 
 effective way to increase exposure to D and grow the community.
 
 http://www.reddit.com/r/programming/comments/975ng/diving_into_the_d_programming_language_tdpl/
 
 
 Andrei


And I always thought it was double-extended 80-bit. The IEEE standard actually
specifies >= 79 bits and Intel implements it as 80bits.

Well you learn something new everyday!

bearophile <bearophileHUGS lycos.com> writes:

Jeremie Pelletier:
And I always thought it was double-extended 80-bit. The IEEE standard actually
specifies >= 79 bits and Intel implements it as 80bits.<


But it seems there are weird differences across operating systems regarding how
much memory is allocated to represent such numbers, like 10, 12, 16 bytes on
Windows, Linux, Mac (this comes from something Walter said when he has adapted
DMD to the other OSs). Do you know why they have chosen different solutions
regarding something so basic? (I don't even want to talk about the stupid
endianess of CPUs).

Bye,
bearophile