Commit Graph

60 Commits

Author SHA1 Message Date
Tim Peters 7a3bfc3a47 Added q/Q standard (x-platform 8-byte ints) mode in struct module.
This completes the q/Q project.

longobject.c _PyLong_AsByteArray:  The original code had a gross bug:
the most-significant Python digit doesn't necessarily have SHIFT
significant bits, and you really need to count how many copies of the sign
bit it has else spurious overflow errors result.

test_struct.py:  This now does exhaustive std q/Q testing at, and on both
sides of, all relevant power-of-2 boundaries, both positive and negative.

NEWS:  Added brief dict news while I was at it.
2001-06-12 01:22:22 +00:00
Tim Peters c533edceb1 Renamed some stuff to tell the truth about what it does. 2001-06-10 23:52:59 +00:00
Tim Peters 7b9542a3f7 Initial support for 'q' and 'Q' struct format codes: for now, only in
native mode, and only when config #defines HAVE_LONG_LONG.  Standard mode
will eventually treat them as 8-byte ints across all platforms, but that
likely requires a new set of routines in longobject.c first (while
sizeof(long) >= 4 is guaranteed by C, there's nothing in C we can rely
on x-platform to hold 8 bytes of int, so we'll have to roll our own;
I'm thinking of a simple pair of conversion functions, Python long
to/from sized vector of unsigned bytes; that may be useful for GMP
conversions too; std q/Q would call them with size fixed at 8).

test_struct.py:  In addition to adding some native-mode 'q' and 'Q' tests,
got rid of unused code, and repaired a non-portable assumption about
native sizeof(short) (it isn't 2 on some Cray boxes).

libstruct.tex:  In addition to adding a bit of 'q'/'Q' docs (more needed
later), removed an erroneous footnote about 'I' behavior.
2001-06-10 23:40:19 +00:00
Fred Drake 132dce2246 Update the code to better reflect recommended style:
Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.
2000-12-12 23:11:42 +00:00
Fred Drake 004d5e6880 Make reindent.py happy (convert everything to 4-space indents!). 2000-10-23 17:22:08 +00:00
Guido van Rossum 41360a4696 Mass check-in after untabifying all files that need it. 1998-03-26 19:42:58 +00:00
Guido van Rossum 04ebf5ca5d Change the ``calcsize*3'' test to be portable to 64-bit machines. 1997-01-03 19:00:37 +00:00
Guido van Rossum 420c11c6aa Added f/d tests for specific byte orders. 1997-01-03 00:09:46 +00:00
Guido van Rossum 2a37850273 Exercise the new feature set somewhat.
Use TestFailed exception and verbose flag from test_support module.
1996-12-31 17:25:47 +00:00
Barry Warsaw 07a0eeceaa A test of the struct module 1996-12-12 23:34:06 +00:00