tree 7b7b67cbd0b331590187687b2b5d4afdc977dce6
parent 7124c3474cd201134c3a3350b46aca468f1edafa
author Alex Stewart <alexs.mac@gmail.com> 1384464440 +0000
committer Alex Stewart <alexs.mac@gmail.com> 1384464892 +0000

Decreasing threshold at which L-BFGS Hessian is updated.

- Decreasing threshold at which L-BFGS Hessian is updated from 1e-10
  to 1e-14 results in a very significant improvement in NIST scores
  (43 -> 53 for CUBIC).
- Adding comment in FindPolynomialRoots() explaining why behaviour
  is correct.

Change-Id: If668e087e7a86d29659aa74e8528b192b604c841