[issue7051] 'g'/'G' format docs need a little more explanation
Mark Dickinson
report at bugs.python.org
Thu Oct 8 20:06:42 CEST 2009
Mark Dickinson <dickinsm at gmail.com> added the comment:
Proposed revision:
General format. For a given precision ``p >= 1``, this rounds the number to ``p``
significant digits and then formats the result in either fixed-point format or in
scientific notation, depending on its magnitude. The precise rules are as follows:
suppose that the result formatted with presentation type ``e`` and precision ``p-1``
would have exponent ``exp``. Then if ``-4 <= exp < p``, the number is formatted as
if with presentation type ``f`` and precision chosen in such a way as to give ``p``
significant digits. Otherwise, the number is formatted as if with presentation type
``e`` and precision ``p-1``.
A precision of ``0`` is treated as equivalent to a precision of ``1``.
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