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CLN: remove old skiplist code #13372

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CLN: remove old skiplist code #13372

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44 changes: 0 additions & 44 deletions pandas/algos.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -1505,52 +1505,8 @@ def roll_kurt(ndarray[double_t] input,
#-------------------------------------------------------------------------------
# Rolling median, min, max

ctypedef double_t (* skiplist_f)(object sl, int n, int p)

cdef _roll_skiplist_op(ndarray arg, int win, int minp, skiplist_f op):
cdef ndarray[double_t] input = arg
cdef double val, prev, midpoint
cdef IndexableSkiplist skiplist
cdef Py_ssize_t nobs = 0, i

cdef Py_ssize_t N = len(input)
cdef ndarray[double_t] output = np.empty(N, dtype=float)

skiplist = IndexableSkiplist(win)

minp = _check_minp(win, minp, N)

for i from 0 <= i < minp - 1:
val = input[i]

# Not NaN
if val == val:
nobs += 1
skiplist.insert(val)

output[i] = NaN

for i from minp - 1 <= i < N:
val = input[i]

if i > win - 1:
prev = input[i - win]

if prev == prev:
skiplist.remove(prev)
nobs -= 1

if val == val:
nobs += 1
skiplist.insert(val)

output[i] = op(skiplist, nobs, minp)

return output

from skiplist cimport *


@cython.boundscheck(False)
@cython.wraparound(False)
def roll_median_c(ndarray[float64_t] arg, int win, int minp):
Expand Down