mirror of
https://github.com/wassname/scikit-image.git
synced 2026-07-02 16:31:29 +08:00
Zachary Pincus
35 lines
1.0 KiB
Cython
35 lines
1.0 KiB
Cython
""" This is the definition file for heap.pyx.
|
|
It contains the definitions of the heap classes, such that
|
|
other cython modules can "cimport heap" and thus use the
|
|
C versions of pop(), push(), and value_of(): pop_fast(), push_fast() and
|
|
value_of_fast()
|
|
"""
|
|
|
|
# determine datatypes for heap
|
|
ctypedef double VALUE_T
|
|
ctypedef int REFERENCE_T
|
|
|
|
|
|
cdef class BinaryHeap:
|
|
cdef readonly int count, levels, min_levels
|
|
cdef VALUE_T *_values
|
|
cdef REFERENCE_T *_references
|
|
cdef int _popped_ref
|
|
|
|
cdef void _add_or_remove_level(self, int add_or_remove)
|
|
cdef void _update(self)
|
|
cdef void _update_one(self, int i)
|
|
cdef void _remove(self, int i)
|
|
|
|
cdef int push_fast(self, double value, int reference)
|
|
cdef VALUE_T pop_fast(self)
|
|
|
|
cdef class FastUpdateBinaryHeap(BinaryHeap):
|
|
cdef readonly int max_reference
|
|
cdef REFERENCE_T *_crossref
|
|
cdef int _invalid_ref
|
|
cdef int _pushed
|
|
|
|
cdef VALUE_T value_of_fast(self, int reference)
|
|
cdef int push_if_lower_fast(self, double value, int reference)
|
|
|