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# cython: language_level=3
from cython cimport floating
cimport numpy as np
cdef floating _euclidean_dense_dense(floating*, floating*, int, bint) nogil
cdef floating _euclidean_sparse_dense(floating[::1], int[::1], floating[::1],
floating, bint) nogil
cpdef void _relocate_empty_clusters_dense(
np.ndarray[floating, ndim=2, mode='c'], floating[::1], floating[:, ::1],
floating[:, ::1], floating[::1], int[::1])
cpdef void _relocate_empty_clusters_sparse(
floating[::1], int[::1], int[::1], floating[::1], floating[:, ::1],
floating[:, ::1], floating[::1], int[::1])
cdef void _average_centers(floating[:, ::1], floating[::1])
cdef void _center_shift(floating[:, ::1], floating[:, ::1], floating[::1])
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