Fix NaNs in grad(jax.nn.elu) for large positive inputs. #1538
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See also this comment on #1052 (and #347 and its "fix" #383 that I still plan to roll back) for a discussion. |
This was referenced Mar 15, 2022
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The gradient of np.where is not robust to NaNs in the unselected branch.
A double where trick makes sure that the
expm1will not NaN.I have added a check_grads test that NaNs with the original implementation.