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Diffstat (limited to 'doc/source/reference/ufuncs.rst')
| -rw-r--r-- | doc/source/reference/ufuncs.rst | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/doc/source/reference/ufuncs.rst b/doc/source/reference/ufuncs.rst index 8f506dd8b..06fbe28dd 100644 --- a/doc/source/reference/ufuncs.rst +++ b/doc/source/reference/ufuncs.rst @@ -1,5 +1,7 @@ .. sectionauthor:: adapted from "Guide to NumPy" by Travis E. Oliphant +.. currentmodule:: numpy + .. _ufuncs: ************************************ @@ -8,8 +10,6 @@ Universal functions (:class:`ufunc`) .. note: XXX: section might need to be made more reference-guideish... -.. currentmodule:: numpy - .. index: ufunc, universal function, arithmetic, operation A universal function (or :term:`ufunc` for short) is a function that @@ -298,6 +298,11 @@ them by defining certain special methods. For details, see :class:`ufunc` ============== +.. autosummary:: + :toctree: generated/ + + numpy.ufunc + .. _ufuncs.kwargs: Optional keyword arguments @@ -335,6 +340,19 @@ advanced usage and will not typically be used. Note that outputs not explicitly filled are left with their uninitialized values. + .. versionadded:: 1.13 + + Operations where ufunc input and output operands have memory overlap are + defined to be the same as for equivalent operations where there + is no memory overlap. Operations affected make temporary copies + as needed to eliminate data dependency. As detecting these cases + is computationally expensive, a heuristic is used, which may in rare + cases result in needless temporary copies. For operations where the + data dependency is simple enough for the heuristic to analyze, + temporary copies will not be made even if the arrays overlap, if it + can be deduced copies are not necessary. As an example, + ``np.add(a, b, out=a)`` will not involve copies. + *where* .. versionadded:: 1.7 |