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bug: where: check condition is boolean #106

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Dec 12, 2024
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5 changes: 4 additions & 1 deletion array_api_strict/_searching_functions.py
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
from __future__ import annotations

from ._array_object import Array
from ._dtypes import _result_type, _real_numeric_dtypes
from ._dtypes import _result_type, _real_numeric_dtypes, bool as _bool
from ._flags import requires_data_dependent_shapes, requires_api_version

from typing import TYPE_CHECKING
Expand Down Expand Up @@ -80,6 +80,9 @@ def where(condition: Array, x1: Array, x2: Array, /) -> Array:
"""
# Call result type here just to raise on disallowed type combinations
_result_type(x1.dtype, x2.dtype)

if condition.dtype != _bool:
raise TypeError("`condition` must be have a boolean data type")

if len({a.device for a in (condition, x1, x2)}) > 1:
raise ValueError("where inputs must all be on the same device")
Expand Down
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