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2880
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IDLE's format menu now provides an option to strip trailing whitespace from a source file.
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2881
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(Contributed by Roger D. Serwy; :issue:`5150`.)
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2882
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Integers are now stored internally either in base 2**15 or in base 2**30, the base being determined at build time. Previously, they were always stored in base 2**15. Using base 2**30 gives significant performance improvements on 64-bit machines, but benchmark results on 32-bit machines have been mixed. Therefore, the default is to use base 2**30 on 64-bit machines and base 2**15 on 32-bit machines; on Unix, there's a new configure option ``--enable-big-digits`` that can be used to override this default.
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2883
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Apart from the performance improvements this change should be invisible to end users, with one exception: for testing and debugging purposes there's a new :attr:`sys.int_info` that provides information about the internal format, giving the number of bits per digit and the size in bytes of the C type used to store each digit::
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2884
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2885
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The :cfunc:`PyLong_AsUnsignedLongLong()` function now handles a negative *pylong* by raising :exc:`OverflowError` instead of :exc:`TypeError`.
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2886
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(Contributed by Mark Dickinson and Lisandro Dalcrin; :issue:`5175`.)
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2887
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Deprecated :cfunc:`PyNumber_Int`. Use :cfunc:`PyNumber_Long` instead.
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2888
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(Contributed by Mark Dickinson; :issue:`4910`.)
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2889
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Added a new :cfunc:`PyOS_string_to_double` function to replace the deprecated functions :cfunc:`PyOS_ascii_strtod` and :cfunc:`PyOS_ascii_atof`.
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