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# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
import math
import warnings
import numpy as np
import pytest
from hypothesis.internal.compat import ceil, floor
@pytest.mark.parametrize(
"value",
[
# These are strings so that the test names are easier to read.
"2**64+1",
"2**64-1",
"2**63+1",
"2**53+1",
"-2**53-1",
"-2**63+1",
"-2**63-1",
"-2**64+1",
"-2**64-1",
],
)
def test_our_floor_and_ceil_avoid_numpy_rounding(value):
a = np.array([eval(value)])
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
# See https://numpy.org/doc/stable/release/1.25.0-notes.html#deprecations
f = floor(a)
c = ceil(a)
# Check *exact* type - we don't want to allow a subclass of int here
assert type(f) == int
assert type(c) == int
# Using math.floor or math.ceil for these values would give an incorrect result.
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
assert (math.floor(a) > a) or (math.ceil(a) < a)
assert f <= a <= c
assert f + 1 > a > c - 1
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