Rat() and ratcoef are so much faster, that I would suggest the user consider
using rat() prior to calling this function, if the coefficients are in fact
exact or floats and keepfloat:true is the case. If they are bigfloats or
who knows what else (quad-double? ) that rat might not know about, maybe
expand is better..
list_of_poly_coeffs(p,x) := (if(ratp(p) then
makelist(ratcoef(p,x,k),k,0,hipow(p,x)) else (p : expand(p),
makelist(coeff(p,x,k),k,0,hipow(p,x)))$
_____
From: maxima-bounces at math.utexas.edu [mailto:maxima-bounces at math.utexas.edu]
On Behalf Of Barton Willis
Sent: Tuesday, September 04, 2007 12:59 PM
To: Stavros Macrakis
Cc: macrakis at gmail.com; maxima at math.utexas.edu; Raymond Toy (RT/EUS);
maxima-bounces at math.utexas.edu
Subject: Re: [Maxima] bfloat roots of polynomials