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Author mark.dickinson
Recipients docs@python, mark.dickinson, rhettinger, tim.peters
Date 2019-07-01.07:00:31
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> however, for x < 0.0 it is always worse

That's quite surprising. Which platform? And can you give some example inputs and outputs? With a good math library, I'd expect `log1p(x)` to almost always be at least as accurate as `log(1 + x)`, and substantially _more_ accurate for small x (say abs(x) < 1e-5). If that's not happening, we may want to substitute our own implementation for the system implementation on some platforms (in the same was as we did for lgamma, erf, and friends).
Date User Action Args
2019-07-01 07:00:32mark.dickinsonsetrecipients: + mark.dickinson, tim.peters, rhettinger, docs@python
2019-07-01 07:00:32mark.dickinsonsetmessageid: <>
2019-07-01 07:00:32mark.dickinsonlinkissue37454 messages
2019-07-01 07:00:31mark.dickinsoncreate