OpenEuphoria

Re: math.e and misc.e

• Posted by CChris <christian.cuvier at agricult?re.go?v.fr> Aug 04, 2007
• 439 views

Juergen Luethje wrote:
> 
> Jason Gade wrote:
> 
> <snip>
> 
> > Um, why not just use 'nan'?
> 
> I also have thought of 'nan', but I didn't suggest it because I don't know
> whether it is actually supported by the Eu interpreters and translators on
> all platforms.
> 
> > It should be relatively easy to generate.
> > <a
> > href="http://www.rapideuphoria.com/cgi-bin/guru.exu?refDoc=on&amp;libDoc=on&amp;otherDoc=on&amp;keywords=nan">http://www.rapideuphoria.com/cgi-bin/guru.exu?refDoc=on&libDoc=on&otherDoc=on&keywords=nan</a>
> 
> Regards,
>    Juergen

 From %EUDIR%\SOURCE\global.e, line 205:

global constant NOVALUE = -1.295837195871e307
-- An unlikely number. If it occurs naturally,
-- there will be a slight loss of optimization
-- as we will not know the value of a variable at compile time.
-- (NaN could be used, but it's not 100% portable).

I'm afraid ther ar some pesky intercompiler differences that just prevent it
from being used, even though it was the very purpose of NaN in IEEE specs.

CChris