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| author | R David Murray <rdmurray@bitdance.com> | 2011-04-25 20:14:26 (GMT) |
|---|---|---|
| committer | R David Murray <rdmurray@bitdance.com> | 2011-04-25 20:14:26 (GMT) |
| commit | dff18b0858a3433cc0aa457a43e63aad86900586 (patch) | |
| tree | cb28d00f022d880f76e4449b34bfca0ef26c0351 /Doc/library/sys.rst | |
| parent | d4a2ff40d581011213be5831a2bfa3ce3f42cb7b (diff) | |
| parent | 0fb5b398cddbf75a121b93680c8f9771f2e8499c (diff) | |
| download | cpython-dff18b0858a3433cc0aa457a43e63aad86900586.zip cpython-dff18b0858a3433cc0aa457a43e63aad86900586.tar.gz cpython-dff18b0858a3433cc0aa457a43e63aad86900586.tar.bz2 | |
Merge #11901: add description of how bitfields are laid out to hexversion docs
Patch by Sijin Joseph.
Diffstat (limited to 'Doc/library/sys.rst')
| -rw-r--r-- | Doc/library/sys.rst | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst index 4b1f02e..4d99ae6 100644 --- a/Doc/library/sys.rst +++ b/Doc/library/sys.rst @@ -540,6 +540,29 @@ always available. ``version_info`` value may be used for a more human-friendly encoding of the same information. + The ``hexversion`` is a 32-bit number with the following layout + + +-------------------------+------------------------------------------------+ + | bits (big endian order) | meaning | + +=========================+================================================+ + | :const:`1-8` | ``PY_MAJOR_VERSION`` (the ``2`` in | + | | ``2.1.0a3``) | + +-------------------------+------------------------------------------------+ + | :const:`9-16` | ``PY_MINOR_VERSION`` (the ``1`` in | + | | ``2.1.0a3``) | + +-------------------------+------------------------------------------------+ + | :const:`17-24` | ``PY_MICRO_VERSION`` (the ``0`` in | + | | ``2.1.0a3``) | + +-------------------------+------------------------------------------------+ + | :const:`25-28` | ``PY_RELEASE_LEVEL`` (``0xA`` for alpha, | + | | ``0xB`` for beta, ``0xC`` for gamma and | + | | ``0xF`` for final) | + +-------------------------+------------------------------------------------+ + | :const:`29-32` | ``PY_RELEASE_SERIAL`` (the ``3`` in | + | | ``2.1.0a3``) | + +-------------------------+------------------------------------------------+ + + thus ``2.1.0a3`` is hexversion ``0x020100a3`` .. data:: int_info |