Interface to custom pari/GP
 
  
 
  
 
 
 
 
 
 
    
        
        asked 0 years ago  
 
 GuidoL gravatar image  
 
 
 
 
    
        
        updated 0 years ago  
 
 FrédéricC gravatar image  
 
 
 
 
 
Hi, I would like to interface pari with a developing branch of pari/GP.
1) Is this possible? 

2) It looks to me that between diifferent calls the variables do not change. Does Sage somehow opens a pari session?
 
Thank you if you have some suggestion
 
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Maybe just execute PARI/GP as a standalone tool from Sage and parse its results?
Max Alekseyev gravatar imageMax Alekseyev (
    
        0 years ago
    )
1
Thank you a lot!
I tried 
!echo '''a=1; other_pari_command; '''  |    /home/custom_pari/pari/gp -q 
and it is working at the moment
If you know of other ways to do it I am curius but thank you already!
GuidoL gravatar imageGuidoL (
    
        0 years ago
    )
If your PARI/GP code is lengthy, you may also save it as a file/script and providing it as an argument to PARI/GP. Vice versa, PARI/GP may communicate its results back in a file as well.
Max Alekseyev gravatar imageMax Alekseyev (
    
        0 years ago
    )
1
The sage interface to PARI/GP goes through cypari2. The latter is configurable to work with any PARI/GP you would like to use, including development version. Depending on your setup, you might just have to
  1. install the PARI/GP development version into your sage installation
  2. rebuild cypari2
vdelecroix gravatar imagevdelecroix (
    
        0 years ago
    )
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