diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/math.rst | 15 | ||||
| -rw-r--r-- | Doc/whatsnew/3.7.rst | 9 |
2 files changed, 0 insertions, 24 deletions
diff --git a/Doc/library/math.rst b/Doc/library/math.rst index 42bbb02..da2b8cc 100644 --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -57,21 +57,6 @@ Number-theoretic and representation functions If *x* is not a float, delegates to ``x.__floor__()``, which should return an :class:`~numbers.Integral` value. -.. function:: fma(x, y, z) - - Fused multiply-add operation. Return ``(x * y) + z``, computed as though with - infinite precision and range followed by a single round to the ``float`` - format. This operation often provides better accuracy than the direct - expression ``(x * y) + z``. - - This function follows the specification of the fusedMultiplyAdd operation - described in the IEEE 754-2008 standard. The standard leaves one case - implementation-defined, namely the result of ``fma(0, inf, nan)`` - and ``fma(inf, 0, nan)``. In these cases, ``math.fma`` returns a NaN, - and does not raise any exception. - - .. versionadded:: 3.7 - .. function:: fmod(x, y) diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst index 192a7ab..fe03def 100644 --- a/Doc/whatsnew/3.7.rst +++ b/Doc/whatsnew/3.7.rst @@ -100,15 +100,6 @@ 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 ============= |