[parenscript-devel] Log macro

[Daniel Gackle]

< Note that base could be any PS expression, so you can't assume that it is
a number at compile-time. >

You're absolutely right. Thanks!  I was using PS's = in a CL expression.

Dan


On Mon, Mar 31, 2008 at 4:56 PM, Travis Cross <travis at travislists.com>
wrote:

> Daniel Gackle wrote:
> > I wrote a simple ps macro to work like CL's log. It seems like a
> > candidate for inclusion in PS itself.
> >
> > (defpsmacro log (number &optional base)
> >   (cond ((null base) `(*math.log ,number))
> >   ((= base 10) `(* (log ,number) *math.*log10e*))
> >   (t  `(/ (log ,number) (log ,base)))))
>
> Hi Daniel--
>
> I added a LOG psmacro along these lines to the repository.  Note that
> base could be any PS expression, so you can't assume that it is a number
> at compile-time.
>
> I also pushed a more CL-like version of ATAN and the missing SQRT
> function.
>
> Cheers,
>
> -- Travis
>
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