PARI-GP use of elldata & seadata packages

["Alan Powell" <AlanPowell@verizon.net>]

As a PARI-GP newbie, I could use a little help in installing

or activating the optional “elldata” and “seadata” packages.

 

I installed PARI-GP 2.5.0 running under Windows 7 SP1 and User

Guide examples seem to work normally.

 

I then downloaded, unzipped and copied the extra packages to the

PARI-GP (gp.exe) executable folder [C:\Program Files (x86)\PARI\]

as follows:

 

1. A folder named elldata containing 200 files named ell0 thru ell199

 

2. A single file named seadata (no filename extension) size 39,870KB

 

The User Guide elliptic functions seem to work e.g.

 

E = ellinit([0,0,0,-4,0])  outputs voluminous curve parameters

 

allap(E,11)  correctly outputs  = 0    but

 

ellidentify(E)  returns

 

*** ellidentify: Elliptic curves files not available for conductor 64

[Missing C:/Program Files (x64)PARI/elldata/ell0].

 

[Note missing “/” between (x64) and “PARI”]

 

trying example:

 

ellsea(E,nextprime(10^6))  returns

 

*** unknown function or error in formal parameters: elsea(E,97).

 

I would appreciate any suggestions to access the elldata & seadata

packages.

 

Alan Powell

AlanPowell@verizon.net