Karim Belabas on Sun, 23 Dec 2007 21:21:29 +0100

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pari-2.3.3 release (STABLE)

Dear PARI lovers,

I would like to announce the release of pari-2.3.3 (STABLE). The sources
and a Windows binary are available from


This is a BUGFIX release for the stable branch, fixing all significant 
problems that could be fixed in a simple, harmless way.

Thanks to all those who reported problems, on the mailing lists or through
our Bug Tracking System. ( See http://pari.math.u-bordeaux.fr/Bugs/ )

A release for the UNSTABLE branch is forthcoming.

Merry Christmas !

Have fun,


P.S: The Changelog:

Done for version 2.3.3 (released 22/12/2007):
    1- remove hack in internal function 'readbin' that used the clone bit as
    a special marker hence returned an invalid object, which could be
    propagated to higher level public functions.                          [F4]
BA  2- bitnegimply(1,2^65) returned a wrong result [#560]                 [F6]
    3- nfeltreduce(nf,t_POLMOD,id) didn't work [#558]                     [F7]
    4- segv in polrootspadic / repeated roots in FpX_root (only in deg 2) [F9]
    5- numbpart inaccurate (and slow). E.g numbpart(52602) off by 1 [#557][F12]
    6- remove type assumptions in mulcxI, mulcxmI: unsafe [#516]]         [F14]
    7- (y/x)/(x^0/y) not correctly simplified                             [F16]
    8- sumpos(x=1,1/x^2,1) had the wrong sign [#587]                      [F21]
    9- default(compatible,3); default(compatible,1) --> case no longer    [F47]
       taken into account (I = i) [#629]       
   10- possible oo loop in _isprincipal [ precision was supposed to increase,
       but could in fact remain the same ]                                [F81]
   11- agm(-1, 1+1e-55) --> oo loop, agm(-1,1) --> wrong result           [F27]
   12- read("a b.gz")   \\ filename contains a space                      [F34]
       gzip: ./a.gz: No such file or directory
   13- quadgen([]) --> incorrect object [#606]                            [F31]
   14- hyperu(0,1,1) --> oo loop [#608]                                   [F32]
   15- fix headers so that ulong is always defined                        [F33]
   16- gclone didn't work on t_INTs with lg > lgefint                     [F37]
   17- exp(2^200*I) --> catastrophic cancellation [cos/sin were OK] [#631][F45]
   18- [Configure] don't rely on $CC exit status, check whether a non-0 size
       executable is produced [ problems with tcc ]                       [F55]
   19- wrong Prototype for subgrouplist [ extra 'p' ]                     [F56]
   20- nf.codiff was only correct up to multiplication by some rational number
       [cf #510 & 2.4.1-F7]                                               [F58]
   21- typo in bnfisintnorm(): missed some solutions  [ couldn't find a unit
       of norm -1 even though one exists ]                                [F74]
   22- dilog(-1) [ more generally polylog of < 0 t_REALs ] should have
       0 imaginary part                                                   [F84]
   23- ix86, x86_64: missing earlyclobber constraint for addllx, subllx,  [F87]
   24- deriv(x/(x+1),y) --> invalid t_RFRAC with exact 0 numerator [#687] [F90]
   25- factornf(x^5+(-a+2)*x^4-a*x^3+(3*a-6)*x^2+(5*a-10)*x+(2*a-5), a^2-5)
       --> SEGV  [ not squarefree -> denominators creeping in ] [#708]   [F110]
BA 26- fix compilation problem with g++-4.2 and GMP                       [F94]
BA 27- missing GP2C descriptions for Pol and Polrev                      [F114]
   28- typo in FpM_gauss_pivot: FpM_rank, FpM_image, FpM_suppl, FpM_indexrank
       much slower than they should be. Same problem in FqM_gauss_pivot. [F113]

Karim Belabas                  Tel: (+33) (0)5 40 00 26 17
Universite Bordeaux 1          Fax: (+33) (0)5 40 00 69 50
351, cours de la Liberation    http://www.math.u-bordeaux.fr/~belabas/
F-33405 Talence (France)       http://pari.math.u-bordeaux.fr/  [PARI/GP]