Improve Sigmoid

Context

Improve Sigmoid implementation for CPU backend to avoid numerical instabilities

approved this merge request

added Feature 🚀 label

enabled an automatic merge when the pipeline for b565866f succeeds

aborted the automatic merge because target branch was updated

added 5 commits

• b565866f...b5d1330b - 4 commits from branch eclipse/aidge:dev
• 0579d407 - Improve Sigmoid

Compare with previous version

enabled an automatic merge when the pipeline for 0579d407 succeeds

mentioned in commit 583195c7

merged

Thanks !

assigned to @oantoni

requested review from @olivierbichler

mentioned in merge request !93 (merged)