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Adds special cases to ak.linspace #5378

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Merged
ajpotts merged 3 commits into from
Feb 4, 2026
Merged

Adds special cases to ak.linspace #5378

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65110d2
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drculhane Feb 2, 2026
a8bbd86
Merge branch 'main' into Closes-5267
ajpotts Feb 3, 2026
9ea85a2
Merge branch 'main' into Closes-5267
ajpotts Feb 4, 2026
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11 changes: 11 additions & 0 deletions arkouda/numpy/pdarraycreation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1426,6 +1426,17 @@ def linspace(
start_ = start
stop_ = stop

# Handle the special cases of num

if num == 0:
return array([], dtype=float64)

if num == 1:
if isinstance(start_, pdarray):
return start_.reshape((1,) + start_.shape)
else:
return array([start_], dtype=float64)

if isinstance(start_, pdarray):
start_ = start_.astype(float64)
elif isinstance(start_, int):
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8 changes: 8 additions & 0 deletions tests/numpy/pdarray_creation_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -816,6 +816,14 @@ def test_full_like_multi_dim(self, size, dtype):
assert (full_like_arr == 1).all()
assert full_like_arr.size == ran_arr.size

def test_linspace_special_cases(self):
pda = ak.linspace(0, 1, 0, endpoint=True)
nda = np.linspace(0, 1, 0, endpoint=True)
assert_almost_equivalent(pda, nda)
pda = ak.linspace(0, 1, 1, endpoint=True)
nda = np.linspace(0, 1, 1, endpoint=True)
assert_almost_equivalent(pda, nda)

@pytest.mark.parametrize("size", pytest.prob_size)
def test_linspace_1D(self, size):
pda = ak.linspace(0, 100, size)
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