Karim Belabas wrote:
* Bill Allombert [2009-05-05 17:30]:
On Tue, May 05, 2009 at 10:58:16AM -0400, Jack Fearnley wrote:
I am trying to run a program I wrote and ran successfully some years
back. It computes Dirichlet twists of elliptic L-functions. The
program uses lisGEN which seems no longer to exist. The usage is
ee = smallinitell(lisGEN(stdin));
where stdin contains [0,1,0,4,4] for example.
There seems to be no exact replacement for this function so I am using
scanf to read the five coefficients as longs and then using mkvecn to
package the coefficients into a vector.
scanf("%ld %ld %ld %ld %ld",&c1,&c2,&c3,&c4,&c5);
printf("%ld %ld %ld %ld %ld \n",c1,c2,c3,c4,c5);
eee=mkvecn(5,(GEN)c1,(GEN)c2,(GEN)c3,(GEN)c4,(GEN)c5);
ee = smallinitell(eee);
Where ee and eee are defined as GEN.
The printed result is
0 1 0 4 4
*** segmentation fault: bug in PARI or calling program.
*** Error in the PARI system. End of program.
1) Is there an exact replacement for lisGEN?
yes, gp_read_stream. thought it seems we forgot to add it to the COMPAT
file.
[...]
3) Where did gzero go?
It has been renamed to gen_0, see the COMPAT file.
There is something fishy in Jack's setup: for backward compatibility
both gzero and lisGEN are aliased to the correct names (given above) in
the file pariold.h.
That file should have been installed in /usr/local/include/pari/.
Are your header files up to date ? (and properly included, they may be
overridden by another older install)
What exact version of PARI are you trying to run ?
Cheers,
K.B.
P.S: There has been a massive cleanup in libpari names:
- lisGEN has been obsoleted about four years age, and
successively renamed readexpr(), then freadexpr(), before the new name
settled in. Reason: french name.
- gun, gzero & friends have been renamed : 'gun' was way too
short ( and french ), 'un' was even worse !
--
Karim Belabas, IMB (UMR 5251) 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-bordeaux1.fr/~belabas/
F-33405 Talence (France) http://pari.math.u-bordeaux1.fr/ [PARI/GP]
`
My setup 2004 dates from 2004 and ran correctly at that time. I
recently changed my Linux operating to Ubuntu 9.04 and downloaded Sage
which includes Pari 2.3.3.
When I tried to run my ancient program it failed from what was probably
a PATH problem. Rather than search through Sage I decided to download
the latest stable copy of Pari which is 2.3.4. I put it in /opt which
is probably a mistake since /usr/local seems to be the default. (I did
this to stay away from the standard Ubuntu application packages.)
I have probably complicated my life unnecessarily but the program now
seems to work with Bill Allombert's corrections.
If anyone is interested, the beginning of my program shows
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "jack.h"
#include <pari.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <complex.h>
and is compiled and executed from ~/csearch.
Best regards,
Jack Fearnley
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