From 749e6d0a01d4cbd30a2cfbd90fe332658a9284ed Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Thu, 19 Feb 2009 06:55:03 +0000 Subject: Add links to helpful external resources. --- Doc/library/functions.rst | 10 ++++++---- Doc/library/math.rst | 4 ++++ 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst index 9de9db6..3789e20 100644 --- a/Doc/library/functions.rst +++ b/Doc/library/functions.rst @@ -1104,10 +1104,12 @@ available. They are listed here in alphabetical order. *reverse* is a boolean value. If set to ``True``, then the list elements are sorted as if each comparison were reversed. - In general, the *key* and *reverse* conversion processes are much faster than - specifying an equivalent *cmp* function. This is because *cmp* is called - multiple times for each list element while *key* and *reverse* touch each - element only once. + In general, the *key* and *reverse* conversion processes are much faster + than specifying an equivalent *cmp* function. This is because *cmp* is + called multiple times for each list element while *key* and *reverse* touch + each element only once. To convert an old-style *cmp* function to a *key* + function, see the `CmpToKey recipe in the ASPN cookbook + `_\. .. versionadded:: 2.4 diff --git a/Doc/library/math.rst b/Doc/library/math.rst index 4ecd14e..4d566a5 100644 --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -100,6 +100,10 @@ Number-theoretic and representation functions occasionally double-round an intermediate sum causing it to be off in its least significant bit. + For further discussion and two alternative approaches, see the `ASPN cookbook + recipes for accurate floating point summation + `_\. + .. versionadded:: 2.6 -- cgit v0.12