8000 gh-121249: Support _Complex types in the struct module by skirpichev · Pull Request #121613 · python/cpython · GitHub
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gh-121249: Support _Complex types in the struct module #121613

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Merged
merged 12 commits into from
Oct 7, 2024
Merged

gh-121249: Support _Complex types in the struct module #121613

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c60f4a4
gh-121249: Support _Complex types in the struct module
skirpichev Jun 30, 2024
3aac6d1
Apply suggestions from code review
skirpichev Jul 11, 2024
785396a
Update Doc/library/struct.rst
skirpichev Jul 13, 2024
e5e04c8
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skirpichev Jul 13, 2024
fec6be6
raise a custom error on systems without native complex numbers
skirpichev Jul 13, 2024
caaef44
address review: separate tests
skirpichev Jul 13, 2024
3256f9d
Merge branch 'master' into complex-in-struct-module-121249
skirpichev Oct 7, 2024
4097aaf
+ use ComplexesAreIdenticalMixin from test.support
skirpichev Oct 7, 2024
5fe6c35
Apply suggestions from code review
skirpichev Oct 7, 2024
0a9240f
Merge branch 'master' into complex-in-struct-module-121249
skirpichev Oct 7, 2024
4820f19
+ fixed typo in lp_double_complex()
skirpichev Oct 7, 2024
fbd189f
address review: clean up useless type casts in the struct module
skirpichev Oct 7, 2024
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+ use ComplexesAreIdenticalMixin from test.support
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@skirpichev
skirpichev committed Oct 7, 2024
commit 4097aaf547aef6d9a3fd8d1a9dc297e9503f4571
31 changes: 2 additions & 29 deletions Lib/test/test_struct.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
from test import support
from test.support import import_helper, suppress_immortalization
from test.support.script_helper import assert_python_ok
from test.support.testcase import ComplexesAreIdenticalMixin

ISBIGENDIAN = sys.byteorder == "big"

Expand Down Expand Up @@ -43,35 +44,7 @@ def bigendian_to_native(value):
else:
return string_reverse(value)

class StructTest(unittest.TestCase):
# from Lib/test/test_complex.py
def assertFloatsAreIdentical(self, x, y):
"""assert that floats x and y are identical, in the sense that:
(1) both x and y are nans, or
(2) both x and y are infinities, with the same sign, or
(3) both x and y are zeros, with the same sign, or
(4) x and y are both finite and nonzero, and x == y

"""
msg = 'floats {!r} and {!r} are not identical'

if math.isnan(x) or math.isnan(y):
if math.isnan(x) and math.isnan(y):
return
elif x == y:
if x != 0.0:
return
# both zero; check that signs match
elif math.copysign(1.0, x) == math.copysign(1.0, y):
return
else:
msg += ': zeros have different signs'
self.fail(msg.format(x, y 5E74 ))

def assertComplexesAreIdentical(self, x, y):
self.assertFloatsAreIdentical(x.real, y.real)
self.assertFloatsAreIdentical(x.imag, y.imag)

class StructTest(ComplexesAreIdenticalMixin, unittest.TestCase):
def test_isbigendian(self):
self.assertEqual((struct.pack('=i', 1)[0] == 0), ISBIGENDIAN)

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