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Fixed database typo and removed unnecessary class identifier.

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Batuhan Berk Başoğlu 2020-10-14 10:10:37 -04:00
parent 00ad49a143
commit 45fb349a7d
5098 changed files with 952558 additions and 85 deletions
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59
venv/Lib/site-packages/scipy/special/tests/test_erfinv.py Normal file
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@ -0,0 +1,59 @@
import numpy as np
from numpy.testing import assert_allclose, assert_equal
import pytest
import scipy.special as sc
class TestInverseErrorFunction:
def test_compliment(self):
# Test erfcinv(1 - x) == erfinv(x)
x = np.linspace(-1, 1, 101)
assert_allclose(sc.erfcinv(1 - x), sc.erfinv(x), rtol=0, atol=1e-15)
def test_literal_values(self):
# calculated via https://keisan.casio.com/exec/system/1180573448
# for y = 0, 0.1, ... , 0.9
actual = sc.erfinv(np.linspace(0, 0.9, 10))
expected = [
0,
0.08885599049425768701574,
0.1791434546212916764928,
0.27246271472675435562,
0.3708071585935579290583,
0.4769362762044698733814,
0.5951160814499948500193,
0.7328690779592168522188,
0.9061938024368232200712,
1.163087153676674086726,
]
assert_allclose(actual, expected, rtol=0, atol=1e-15)
@pytest.mark.parametrize(
'f, x, y',
[
(sc.erfinv, -1, -np.inf),
(sc.erfinv, 0, 0),
(sc.erfinv, 1, np.inf),
(sc.erfinv, -100, np.nan),
(sc.erfinv, 100, np.nan),
(sc.erfcinv, 0, np.inf),
(sc.erfcinv, 1, -0.0),
(sc.erfcinv, 2, -np.inf),
(sc.erfcinv, -100, np.nan),
(sc.erfcinv, 100, np.nan),
],
ids=[
'erfinv at lower bound',
'erfinv at midpoint',
'erfinv at upper bound',
'erfinv below lower bound',
'erfinv above upper bound',
'erfcinv at lower bound',
'erfcinv at midpoint',
'erfcinv at upper bound',
'erfcinv below lower bound',
'erfcinv above upper bound',
]
)
def test_domain_bounds(self, f, x, y):
assert_equal(f(x), y)