/usr/lib/python3/dist-packages/numpy/core/tests/test_longdouble.py is in python3-numpy 1:1.12.1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | from __future__ import division, absolute_import, print_function
import locale
import numpy as np
from numpy.testing import (
run_module_suite, assert_, assert_equal, dec, assert_raises,
assert_array_equal, TestCase, temppath,
)
from numpy.compat import sixu
from test_print import in_foreign_locale
longdouble_longer_than_double = (np.finfo(np.longdouble).eps
< np.finfo(np.double).eps)
_o = 1 + np.finfo(np.longdouble).eps
string_to_longdouble_inaccurate = (_o != np.longdouble(repr(_o)))
del _o
def test_scalar_extraction():
"""Confirm that extracting a value doesn't convert to python float"""
o = 1 + np.finfo(np.longdouble).eps
a = np.array([o, o, o])
assert_equal(a[1], o)
# Conversions string -> long double
def test_repr_roundtrip():
o = 1 + np.finfo(np.longdouble).eps
assert_equal(np.longdouble(repr(o)), o,
"repr was %s" % repr(o))
def test_unicode():
np.longdouble(sixu("1.2"))
def test_string():
np.longdouble("1.2")
def test_bytes():
np.longdouble(b"1.2")
@in_foreign_locale
def test_fromstring_foreign():
f = 1.234
a = np.fromstring(repr(f), dtype=float, sep=" ")
assert_equal(a[0], f)
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_repr_roundtrip_bytes():
o = 1 + np.finfo(np.longdouble).eps
assert_equal(np.longdouble(repr(o).encode("ascii")), o)
@in_foreign_locale
def test_repr_roundtrip_foreign():
o = 1.5
assert_equal(o, np.longdouble(repr(o)))
def test_bogus_string():
assert_raises(ValueError, np.longdouble, "spam")
assert_raises(ValueError, np.longdouble, "1.0 flub")
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_fromstring():
o = 1 + np.finfo(np.longdouble).eps
s = (" " + repr(o))*5
a = np.array([o]*5)
assert_equal(np.fromstring(s, sep=" ", dtype=np.longdouble), a,
err_msg="reading '%s'" % s)
@in_foreign_locale
def test_fromstring_best_effort_float():
assert_equal(np.fromstring("1,234", dtype=float, sep=" "),
np.array([1.]))
@in_foreign_locale
def test_fromstring_best_effort():
assert_equal(np.fromstring("1,234", dtype=np.longdouble, sep=" "),
np.array([1.]))
def test_fromstring_bogus():
assert_equal(np.fromstring("1. 2. 3. flop 4.", dtype=float, sep=" "),
np.array([1., 2., 3.]))
def test_fromstring_empty():
assert_equal(np.fromstring("xxxxx", sep="x"),
np.array([]))
def test_fromstring_missing():
assert_equal(np.fromstring("1xx3x4x5x6", sep="x"),
np.array([1]))
class FileBased(TestCase):
ldbl = 1 + np.finfo(np.longdouble).eps
tgt = np.array([ldbl]*5)
out = ''.join([repr(t) + '\n' for t in tgt])
def test_fromfile_bogus(self):
with temppath() as path:
with open(path, 'wt') as f:
f.write("1. 2. 3. flop 4.\n")
res = np.fromfile(path, dtype=float, sep=" ")
assert_equal(res, np.array([1., 2., 3.]))
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_fromfile(self):
with temppath() as path:
with open(path, 'wt') as f:
f.write(self.out)
res = np.fromfile(path, dtype=np.longdouble, sep="\n")
assert_equal(res, self.tgt)
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_genfromtxt(self):
with temppath() as path:
with open(path, 'wt') as f:
f.write(self.out)
res = np.genfromtxt(path, dtype=np.longdouble)
assert_equal(res, self.tgt)
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_loadtxt(self):
with temppath() as path:
with open(path, 'wt') as f:
f.write(self.out)
res = np.loadtxt(path, dtype=np.longdouble)
assert_equal(res, self.tgt)
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_tofile_roundtrip(self):
with temppath() as path:
self.tgt.tofile(path, sep=" ")
res = np.fromfile(path, dtype=np.longdouble, sep=" ")
assert_equal(res, self.tgt)
@in_foreign_locale
def test_fromstring_foreign():
s = "1.234"
a = np.fromstring(s, dtype=np.longdouble, sep=" ")
assert_equal(a[0], np.longdouble(s))
@in_foreign_locale
def test_fromstring_foreign_sep():
a = np.array([1, 2, 3, 4])
b = np.fromstring("1,2,3,4,", dtype=np.longdouble, sep=",")
assert_array_equal(a, b)
@in_foreign_locale
def test_fromstring_foreign_value():
b = np.fromstring("1,234", dtype=np.longdouble, sep=" ")
assert_array_equal(b[0], 1)
# Conversions long double -> string
def test_repr_exact():
o = 1 + np.finfo(np.longdouble).eps
assert_(repr(o) != '1')
@dec.knownfailureif(longdouble_longer_than_double, "BUG #2376")
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_format():
o = 1 + np.finfo(np.longdouble).eps
assert_("{0:.40g}".format(o) != '1')
@dec.knownfailureif(longdouble_longer_than_double, "BUG #2376")
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_percent():
o = 1 + np.finfo(np.longdouble).eps
assert_("%.40g" % o != '1')
@dec.knownfailureif(longdouble_longer_than_double, "array repr problem")
@dec.knownfailureif(string_to_longdouble_inaccurate, "Need strtold_l")
def test_array_repr():
o = 1 + np.finfo(np.longdouble).eps
a = np.array([o])
b = np.array([1], dtype=np.longdouble)
if not np.all(a != b):
raise ValueError("precision loss creating arrays")
assert_(repr(a) != repr(b))
if __name__ == "__main__":
run_module_suite()
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