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-rw-r--r--Doc/library/math.rst7
-rw-r--r--Doc/whatsnew/3.3.rst45
2 files changed, 36 insertions, 16 deletions
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 98c5b33..8254d3f 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -184,6 +184,13 @@ Power and logarithmic functions
result is calculated in a way which is accurate for *x* near zero.
+.. function:: log2(x)
+
+ Return the base-2 logarithm of *x*.
+
+ .. versionadded:: 3.3
+
+
.. function:: log10(x)
Return the base-10 logarithm of *x*. This is usually more accurate
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index 37f96ce..e657af2 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -76,25 +76,15 @@ New module: :mod:`faulthandler`.
* :envvar:`PYTHONFAULTHANDLER`
* :option:`-X` ``faulthandler``
-os
---
-* The :mod:`os` module has a new :func:`~os.sendfile` function which provides
- an efficent "zero-copy" way for copying data from one file (or socket)
- descriptor to another. The phrase "zero-copy" refers to the fact that all of
- the copying of data between the two descriptors is done entirely by the
- kernel, with no copying of data into userspace buffers. :func:`~os.sendfile`
- can be used to efficiently copy data from a file on disk to a network socket,
- e.g. for downloading a file.
+math
+----
- (Patch submitted by Ross Lagerwall and Giampaolo Rodolà in :issue:`10882`.)
+The :mod:`math` module has a new function:
-* The :mod:`os` module has two new functions: :func:`~os.getpriority` and
- :func:`~os.setpriority`. They can be used to get or set process
- niceness/priority in a fashion similar to :func:`os.nice` but extended to all
- processes instead of just the current one.
+ * :func:`~math.log2`: return the base-2 logarithm of *x*
+ (Written by Mark Dickinson in :issue:`11888`).
- (Patch submitted by Giampaolo Rodolà in :issue:`10784`.)
nntplib
-------
@@ -112,6 +102,28 @@ connection when done::
(Contributed by Giampaolo Rodolà in :issue:`9795`)
+
+os
+--
+
+* The :mod:`os` module has a new :func:`~os.sendfile` function which provides
+ an efficent "zero-copy" way for copying data from one file (or socket)
+ descriptor to another. The phrase "zero-copy" refers to the fact that all of
+ the copying of data between the two descriptors is done entirely by the
+ kernel, with no copying of data into userspace buffers. :func:`~os.sendfile`
+ can be used to efficiently copy data from a file on disk to a network socket,
+ e.g. for downloading a file.
+
+ (Patch submitted by Ross Lagerwall and Giampaolo Rodolà in :issue:`10882`.)
+
+* The :mod:`os` module has two new functions: :func:`~os.getpriority` and
+ :func:`~os.setpriority`. They can be used to get or set process
+ niceness/priority in a fashion similar to :func:`os.nice` but extended to all
+ processes instead of just the current one.
+
+ (Patch submitted by Giampaolo Rodolà in :issue:`10784`.)
+
+
sys
---
@@ -120,10 +132,11 @@ sys
(:issue:`11223`)
+
signal
------
-* The :mod:`signal` module has a new functions:
+* The :mod:`signal` module has new functions:
* :func:`~signal.pthread_sigmask`: fetch and/or change the signal mask of the
calling thread (Contributed by Jean-Paul Calderone in :issue:`8407`) ;