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============================
Low-level callback functions
============================
.. currentmodule:: scipy
Some functions in SciPy take as arguments callback functions, which
can either be python callables or low-level compiled functions. Using
compiled callback functions can improve performance somewhat by
avoiding wrapping data in Python objects.
Such low-level functions in Scipy are wrapped in `LowLevelCallable`
objects, which can be constructed from function pointers obtained from
ctypes, cffi, Cython, or contained in Python `PyCapsule` objects.
.. autosummary::
:toctree: generated/
LowLevelCallable
.. seealso::
Functions accepting low-level callables:
`scipy.integrate.quad`, `scipy.ndimage.generic_filter`, `scipy.ndimage.generic_filter1d`,
`scipy.ndimage.geometric_transform`
Usage examples:
:ref:`ndimage-ccallbacks`, :ref:`quad-callbacks`
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