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-rw-r--r--doc/source/reference/ufuncs.rst9
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/source/reference/ufuncs.rst b/doc/source/reference/ufuncs.rst
index 3d5176638..a97534612 100644
--- a/doc/source/reference/ufuncs.rst
+++ b/doc/source/reference/ufuncs.rst
@@ -350,7 +350,8 @@ advanced usage and will not typically be used.
.. versionadded:: 1.6
- Overrides the dtype of the calculation and output arrays. Similar to *sig*.
+ Overrides the dtype of the calculation and output arrays. Similar to
+ *signature*.
*subok*
@@ -359,7 +360,7 @@ advanced usage and will not typically be used.
Defaults to true. If set to false, the output will always be a strict
array, not a subtype.
-*sig* or *signature*
+*signature*
Either a data-type, a tuple of data-types, or a special signature
string indicating the input and output types of a ufunc. This argument
@@ -370,7 +371,9 @@ advanced usage and will not typically be used.
available and searching for a loop with data-types to which all inputs
can be cast safely. This keyword argument lets you bypass that
search and choose a particular loop. A list of available signatures is
- provided by the **types** attribute of the ufunc object.
+ provided by the **types** attribute of the ufunc object. For backwards
+ compatibility this argument can also be provided as *sig*, although
+ the long form is preferred.
*extobj*