fix overly restrictive assertion (#17939)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/17939
Instead of just asserting min <= 0 and max >= 0 , we adjust histogram to include 0 in the range.
We need to include 0 in the range during norm error minimization to correctly represent our quantization method that includes 0.
Reviewed By: csummersea
Differential Revision: D14428732
fbshipit-source-id: 6669a9d2c7d409ec3b31aee0afe48071986b9b71
