Question about declare and properties of functions versus variables
Subject: Question about declare and properties of functions versus variables
From: Peter Dufault
Date: Mon, 23 May 2011 17:39:49 -0400
"declare" says that some properties are for functions and some are for variables. In particular, real, scalar, and imaginary apply to variables. I have this:
/* XXX "ip" and "qp" are functions, so does "real", "scalar", or "imaginary"
* apply?
*/
declare (ip,[real,scalar,evenfun]);
declare (qp,[imaginary,scalar,oddfun]);
However, then I take rectform of them, and maxima seems to know that ip is strictly real, but not that qp is strictly imaginary:
(%i10) rectform(qp(k));
(%o10) realpart(qp(k)) + %i imagpart(qp(k))
(%i11) rectform(ip(k));
(%o11) ip(k)
What don't I understand?
(Maxima 5.23.2 http://maxima.sourceforge.net
using Lisp SBCL 1.0.40-1.fc14)
Peter
-----------------
Peter Dufault
HD Associates, Inc. Software and System Engineering