scipy.LowLevelCallable¶
-
class
scipy.
LowLevelCallable
[source]¶ Low-level callback function.
- Parameters
- function{PyCapsule, ctypes function pointer, cffi function pointer}
Low-level callback function.
- user_data{PyCapsule, ctypes void pointer, cffi void pointer}
User data to pass on to the callback function.
- signaturestr, optional
Signature of the function. If omitted, determined from function, if possible.
Notes
The argument
function
can be one of:PyCapsule, whose name contains the C function signature
ctypes function pointer
cffi function pointer
The signature of the low-level callback must match one of those expected by the routine it is passed to.
If constructing low-level functions from a PyCapsule, the name of the capsule must be the corresponding signature, in the format:
return_type (arg1_type, arg2_type, ...)
For example:
"void (double)" "double (double, int *, void *)"
The context of a PyCapsule passed in as
function
is used asuser_data
, if an explicit value foruser_data
was not given.- Attributes
- function
Callback function given.
- user_data
User data given.
- signature
Signature of the function.
Methods
from_cython
(module, name[, user_data, signature])Create a low-level callback function from an exported Cython function.