Chris,
I found this in a piece of code I wrote (obviously hastily) some time
back:
use Math::Trig 'pi';
my $deg2rad = pi/180.;
use PDL;
I should note that basically any other call to Math::Trig will overload
something that PDL also overloads, resulting in a warning from Perl.
Of course, if one is using PDL, one shouldn't ever have to call
Math::Trig, I don't think.
I don't have big ideas to contribute, I'll almost certainly be happy
with whatever you come up with. But I'd say an implementation consistent
with Math::Trig would probably be good.
--Edward H.
> -----Original Message-----
> From: Chris Marshall [mailto:[email protected]]
> Sent: Sunday, May 02, 2010 5:46 AM
> To: perldl
> Cc: [email protected]
> Subject: [Perldl] which math constants for PDL?
>
> I was reviewing outstanding issues for our upcoming PDL CPAN
> developers release and came upon:
>
>
> http://sourceforge.net/tracker/?func=detail&aid=2787823&group_
> id=612&atid=350612
>
> regarding adding basic math constants to PDL.
>
> If you have any numerical constants you calculate to use with
> PDL and any preference on their implementation style (sub,
> scalar, object,...) please rsvp to the list for discussion.
>
> e.g.
>
> I'm always calculating Pi
>
> I prefer a perl scalar implementation
> so I don't have to play games with
> string interpolation.
>
> Lower case is nice for ease of
> typing. Upper case is useful in
> that "constants" are often upcased
> a la C macros.
>
>
> Thanks,
> Chris
>
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