Skip to content

Try to find existing tests for large ints on 32-bit platforms #121495

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
serhiy-storchaka wants to merge 5 commits into from
Closed

Try to find existing tests for large ints on 32-bit platforms #121495

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
d11353b
Try to find existing tests for large ints on 32-bit platforms
serhiy-storchaka Jul 8, 2024
afa70d3
Add new tests.
serhiy-storchaka Jul 8, 2024
a3e6be4
Always run new tests.
serhiy-storchaka Jul 8, 2024
8e0650e
Fix test_long_asnativebytes_large.
serhiy-storchaka Jul 8, 2024
84f7aef
Always run test_long_asnativebytes_large.
serhiy-storchaka Jul 8, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 12 additions & 0 deletions Lib/test/test_capi/test_long.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -453,6 +453,18 @@ def test_long_aspid(self):
def test_long_aspid_limited(self):
self._test_long_aspid(_testlimitedcapi.pylong_aspid)

#@support.bigmemtest(2**29, memuse=2.7, dry_run=False)
def test_long_asnativebytes_large(self, size=2**29):
asnativebytes = _testcapi.pylong_asnativebytes
v = 1 << (size * 8)
buffer = bytearray(size * 16 // 15 + 10)
r = asnativebytes(v, buffer, 0, -1)
self.assertEqual(r, size + 1)
self.assertEqual(buffer.count(0), len(buffer))
r = asnativebytes(v, buffer, len(buffer), -1)
self.assertEqual(r, size + 1)
self.assertEqual(buffer.count(0), len(buffer) - 1)

def test_long_asnativebytes(self):
import math
from _testcapi import (
Expand Down
58 changes: 58 additions & 0 deletions Lib/test/test_long.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -473,6 +473,13 @@ def test_float_conversion(self):
self.check_float_conversion(value)
self.check_float_conversion(-value)

@support.requires_IEEE_754
#@support.bigmemtest(2**29, memuse=1.6, dry_run=False)
def test_float_conversion_large(self, size=2**29):
bits = size * 8
v = 1 << bits
self.assertRaises(OverflowError, float, v)

def test_float_overflow(self):
for x in -2.0, -1.0, 0.0, 1.0, 2.0:
self.assertEqual(float(int(x)), x)
Expand Down Expand Up @@ -614,6 +621,57 @@ def __lt__(self, other):
eq(x > y, Rcmp > 0)
eq(x >= y, Rcmp >= 0)

@support.requires_IEEE_754
#@support.bigmemtest(2**29, memuse=3.2, dry_run=False)
def test_mixed_compares_large_integer(self, size=2**29):
bits = size * 8
v = 1 << bits
f = sys.float_info.max
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, True)
self.assertIs(f <= v, True)
self.assertIs(f > v, False)
self.assertIs(f >= v, False)
f = float('inf')
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, False)
self.assertIs(f <= v, False)
self.assertIs(f > v, True)
self.assertIs(f >= v, True)
f = float('nan')
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, False)
self.assertIs(f <= v, False)
self.assertIs(f > v, False)
self.assertIs(f >= v, False)

del v
v = (-1) << bits
f = -sys.float_info.max
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, False)
self.assertIs(f <= v, False)
self.assertIs(f > v, True)
self.assertIs(f >= v, True)
f = float('-inf')
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, True)
self.assertIs(f <= v, True)
self.assertIs(f > v, False)
self.assertIs(f >= v, False)
f = float('nan')
self.assertIs(f == v, False)
self.assertIs(f != v, True)
self.assertIs(f < v, False)
self.assertIs(f <= v, False)
self.assertIs(f > v, False)
self.assertIs(f >= v, False)

def test__format__(self):
self.assertEqual(format(123456789, 'd'), '123456789')
self.assertEqual(format(123456789, 'd'), '123456789')
Expand Down
16 changes: 16 additions & 0 deletions Lib/test/test_math.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1120,6 +1120,14 @@ def __index__(self):
with self.assertRaises(TypeError):
math.isqrt(value)

#@support.bigmemtest(2**29, memuse=7, dry_run=False)
def test_isqrt_large(self, size=2**29):
bits = size * 8
v = 1 << bits
w = math.isqrt(v)
self.assertEqual(w.bit_length(), bits // 2 + 1)
self.assertEqual(w.bit_count(), 1)

def test_lcm(self):
lcm = math.lcm
self.assertEqual(lcm(0, 0), 0)
Expand Down Expand Up @@ -1261,6 +1269,14 @@ def testLog10(self):
self.assertEqual(math.log(INF), INF)
self.assertTrue(math.isnan(math.log10(NAN)))

#@support.bigmemtest(2**29, memuse=1.6, dry_run=False)
def test_log_large_integer(self, size=2**29):
bits = size * 8
v = 1 << bits
self.assertAlmostEqual(math.log2(v), bits)
self.assertAlmostEqual(math.log(v), bits * 0.6931471805599453)
self.assertAlmostEqual(math.log10(v), bits * 0.3010299956639812)

def testSumProd(self):
sumprod = math.sumprod
Decimal = decimal.Decimal
Expand Down