diff options
Diffstat (limited to 'doc/source/reference')
| -rw-r--r-- | doc/source/reference/c-api.ufunc.rst | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/source/reference/c-api.ufunc.rst b/doc/source/reference/c-api.ufunc.rst index 79ad256f5..5ac34edc1 100644 --- a/doc/source/reference/c-api.ufunc.rst +++ b/doc/source/reference/c-api.ufunc.rst @@ -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. |