lambert 2 étendu to lat/long converter

[Cableguy]

Hi guys

I need a small module to convert gps lat/lon values to l2e system and vice-versa

I can live with any lat/lon system being feed to the module

 

[mc73]

Is it this system?
Projection conique conforme de Lambert - Wikipédia

 

[Cableguy]

Not sure...
From what i understand there 3 lambert systems, and the Lambert2étendu uses quadrant correction factors...

[Edit] After a more close, but not too intensive, look, I would say YES that's what I was talking about...