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| -rw-r--r-- | Doc/library/functions.rst | 10 | ||||
| -rw-r--r-- | 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 1e5b759..63a2e3e 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 + <http://code.activestate.com/recipes/576653/>`_\. .. 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 + <http://code.activestate.com/recipes/393090/>`_\. + .. versionadded:: 2.6 |