8000 WIP: Alternative ufunc signature expansion for flexible dimensions by mhvk · Pull Request #11165 · numpy/numpy · GitHub
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WIP: Alternative ufunc signature expansion for flexible dimensions #11165

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WIP: Alternative ufunc signature expansion for flexible dimensions #11165

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e9a5ab5
ENH: Add frozen dimensions to gufunc signatures
mattip Apr 30, 2018
cbbe0f6
convert reserved field to version, set new version to 1
mattip Apr 30, 2018
dbbeb58
add tests for new signatures
mattip Apr 30, 2018
18505d7
test, document, implement flexible signature
mattip Apr 30, 2018
67e752e
improve docs for PyUFunc_FromFuncAndData
mattip May 9, 2018
b785515
fix for python2.7
mattip May 23, 2018
0f40c56
working state
mhvk May 26, 2018
3fac658
Per-core flags, regular tests passing.
mhvk May 26, 2018
922a318
Still working now with flexible types.
mhvk May 26, 2018
4c1d54c
Rename to IGNORE, since we're not doing broadcasting.
mhvk May 26, 2018
3f4cc7b
Add tests with an output argument.
mhvk May 27, 2018
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improve docs for PyUFunc_FromFuncAndData
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@mattip
mattip committed May 22, 2018
commit 67e752ee54da3fa68fa122fea98f3681785ac3dc
14 changes: 10 additions & 4 deletions doc/source/reference/c-api.ufunc.rst
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Expand Up @@ -93,12 +93,18 @@ Functions
the corresponding 1-d loop function in the func array.

:param types:
Must be of length (*nin* + *nout*) \* *ntypes*, and it
contains the data-types (built-in only) that the corresponding
function in the *func* array can deal with.
Int8 of length `(nin + nout) * ntypes` It encodes the :ref:`dtype.num`
(built-in only) that the corresponding function in the `func` array
accepts. For a ufunc with two `ntypes`, one `nin` and one `nout` where
the first function accepts and returns `int32` and the second accepts
and returns `int64`, `types` would be `\05\05\07\07` since `int32.num`
is 5 and `int64.num` is 7.

:ref:`casting-rules` will be used at runtime to find the first `func` callable
by the input/output provided.

:param ntypes:
How many different data-type "signatures" the ufunc has implemented.
How many different data-type-specific functions the ufunc has implemented.

:param nin:
The number of inputs to this operation.
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