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author | Mark Dickinson <mdickinson@enthought.com> | 2012-10-31 19:44:36 (GMT) |
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committer | Mark Dickinson <mdickinson@enthought.com> | 2012-10-31 19:44:36 (GMT) |
commit | 6ae568b9dfb565430b0761979e56a29e41f75edd (patch) | |
tree | 6dffd054c401fdde87afc652a616d84cf436acee /Doc/library | |
parent | 9892f52145a72729253c0e71790feef49d7892af (diff) | |
download | cpython-6ae568b9dfb565430b0761979e56a29e41f75edd.zip cpython-6ae568b9dfb565430b0761979e56a29e41f75edd.tar.gz cpython-6ae568b9dfb565430b0761979e56a29e41f75edd.tar.bz2 |
Issue #16348: Fix incorrect documentation for Decimal.remainder_near.
Diffstat (limited to 'Doc/library')
-rw-r--r-- | Doc/library/decimal.rst | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst index ef8b43f..919ebe4 100644 --- a/Doc/library/decimal.rst +++ b/Doc/library/decimal.rst @@ -710,12 +710,21 @@ Decimal objects .. method:: remainder_near(other[, context]) - Compute the modulo as either a positive or negative value depending on - which is closest to zero. For instance, ``Decimal(10).remainder_near(6)`` - returns ``Decimal('-2')`` which is closer to zero than ``Decimal('4')``. - - If both are equally close, the one chosen will have the same sign as - *self*. + Return the remainder from dividing *self* by *other*. This differs from + ``self % other`` in that the sign of the remainder is chosen so as to + minimize its absolute value. More precisely, the return value is + ``self - n * other`` where ``n`` is the integer nearest to the exact + value of ``self / other``, and if two integers are equally near then the + even one is chosen. + + If the result is zero then its sign will be the sign of *self*. + + >>> Decimal(18).remainder_near(Decimal(10)) + Decimal('-2') + >>> Decimal(25).remainder_near(Decimal(10)) + Decimal('5') + >>> Decimal(35).remainder_near(Decimal(10)) + Decimal('-5') .. method:: rotate(other[, context]) |