from typing import TypeVar, assert_type

import numpy as np
import numpy.typing as npt
from numpy._typing import _32Bit, _64Bit

T1 = TypeVar("T1", bound=npt.NBitBase)  # type: ignore[deprecated]  # pyright: ignore[reportDeprecated]
T2 = TypeVar("T2", bound=npt.NBitBase)  # type: ignore[deprecated]  # pyright: ignore[reportDeprecated]

def add(a: np.floating[T1], b: np.integer[T2]) -> np.floating[T1 | T2]: ...

i8: np.int64
i4: np.int32
f8: np.float64
f4: np.float32

assert_type(add(f8, i8), np.floating[_64Bit])
assert_type(add(f4, i8), np.floating[_32Bit | _64Bit])
assert_type(add(f8, i4), np.floating[_32Bit | _64Bit])
assert_type(add(f4, i4), np.floating[_32Bit])