Karim BELABAS on Wed, 25 Jun 2003 19:34:11 +0200 (MEST) |
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
Re: pari-2.2.6.alpha released |
On Sun, 22 Jun 2003, Alexander Shumakovitch wrote: > In the meantime, I've stumbled upon another misbehavior: > (22:32) gp > Mat(5) * [0]~ > time = 0 ms. > %1 = [0]~ > (22:33) gp > [Mat(5)] * [[0]~]~ > time = 0 ms. > %3 = 0 > > The second result is not a column, but a number. It's not the case if > [0] is replaced with [2], say. No problems with versions <= 2.2.5. Introduced when speeding up multiplication by sparse vectors [2.2.6-C.25]: ignoring a component following a positive 'isexactzero' check is incorrect when the component is not a scalar. Fixed in CVS. Karim. -- Karim Belabas Tel: (+33) (0)1 69 15 57 48 Dép. de Mathématiques, Bât. 425 Fax: (+33) (0)1 69 15 60 19 Université Paris-Sud http://www.math.u-psud.fr/~belabas/ F-91405 Orsay (France) http://www.parigp-home.de/ [PARI/GP]