[parenscript-devel] Log macro
danielgackle at gmail.com
Tue Apr 1 16:19:21 UTC 2008
< 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.
On Mon, Mar 31, 2008 at 4:56 PM, Travis Cross <travis at travislists.com>
> 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
> -- Travis
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