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| author | Mark Dickinson <dickinsm@gmail.com> | 2017-01-21 12:35:30 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2017-01-21 12:35:30 (GMT) |
| commit | d1b230e48b81eb90d10f0ceb4e34c547800bd3a8 (patch) | |
| tree | bb7cfe1f084957c978a105111f7345dddecd695d /Doc/whatsnew/3.7.rst | |
| parent | 502efda10c6ec54ba9f0d490264b785971b2b6cc (diff) | |
| download | cpython-d1b230e48b81eb90d10f0ceb4e34c547800bd3a8.zip cpython-d1b230e48b81eb90d10f0ceb4e34c547800bd3a8.tar.gz cpython-d1b230e48b81eb90d10f0ceb4e34c547800bd3a8.tar.bz2 | |
Issue #29282: add fused multiply-add function, math.fma.
Diffstat (limited to 'Doc/whatsnew/3.7.rst')
| -rw-r--r-- | Doc/whatsnew/3.7.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst index fe03def..192a7ab 100644 --- a/Doc/whatsnew/3.7.rst +++ b/Doc/whatsnew/3.7.rst @@ -100,6 +100,15 @@ The :const:`~unittest.mock.sentinel` attributes now preserve their identity when they are :mod:`copied <copy>` or :mod:`pickled <pickle>`. (Contributed by Serhiy Storchaka in :issue:`20804`.) +math module +----------- + +A new function :func:`~math.fma` for fused multiply-add operations has been +added. This function computes ``x * y + z`` with only a single round, and so +avoids any intermediate loss of precision. It wraps the ``fma`` function +provided by C99, and follows the specification of the IEEE 754-2008 +"fusedMultiplyAdd" operation for special cases. + Optimizations ============= |