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Changes to the C API
====================
This page details cumulative changes to the C API between v1.2.1 and
v1.4.0, or since this package was forked from
`kbarbary/sep <https://github.com/kbarbary/sep>`_. Almost all changes to
the public API are to integer parameters, many of which have been changed
from ``int`` to ``int64_t``, to fix problems which may arise with
extremely large arrays. The other change of note is to the ``sep_image``
struct, which enables the user to pass an existing segmentation map, and
re-extract all morphological and photometric quantities on a different
image.
All changes here are transparent to users of the Python interface.
.. c:struct:: sep_image
- Three new parameters have been added:
.. c:var:: int64_t * segids
The unique ids in an existing segmentation map.
.. c:var:: int64_t * idcounts
The number of occurrences of each unique id in an existing
segmentation map.
.. c:var:: int64_t numids
The total number of unique ids in an existing segmentation map.
- The type of ``w`` and ``h`` has changed from ``int`` to ``int64_t``.
.. c:struct:: sep_bkg
- The type of the following parameters has changed from ``int`` to
``int64_t``: ``w``, ``h``, ``bw``, ``bh``, ``nx``, ``ny``, and ``n``.
.. c:struct:: sep_catalog
- The type of the following parameters has changed from ``int`` to
``int64_t``: ``npix``, ``tnpix``, ``xmin``, ``xmax``, ``ymin``,
``ymax``, ``xcpeak``, ``ycpeak``, ``xpeak``, ``ypeak``, ``pix``, and
``objectspix``.
.. c:function:: int sep_background()
- The type of the following parameters has changed from ``int`` to
``int64_t``: ``bw``, ``bh``, ``fw``, and ``fh``.
.. c:function:: float sep_bkg_pix()
- The type of ``x`` and ``y`` has changed from ``int`` to ``int64_t``.
.. c:function:: int sep_bkg_line()
- The type of ``y`` has changed from ``int`` to ``int64_t``.
.. c:function:: int sep_bkg_subline()
- The type of ``y`` has changed from ``int`` to ``int64_t``.
.. c:function:: int sep_bkg_rmsline()
- The type of ``y`` has changed from ``int`` to ``int64_t``.
.. c:function:: int sep_extract()
- The type of ``convw`` and ``convh`` has changed from ``int`` to
``int64_t``.
.. c:function:: int sep_sum_circann_multi()
- The type of ``n`` has changed from ``int`` to ``int64_t``.
.. c:function:: int sep_flux_radius()
- The type of ``n`` has changed from ``int`` to ``int64_t``.
.. c:function:: void sep_set_ellipse()
- The type of ``w`` and ``h`` has changed from ``int`` to ``int64_t``.
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