Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Backport of r70459.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 128880d..a4554a6 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -332,6 +332,9 @@
self.assert_(isinstance(sys.executable, basestring))
self.assertEqual(len(sys.float_info), 11)
self.assertEqual(sys.float_info.radix, 2)
+ self.assertEqual(len(sys.long_info), 2)
+ self.assert_(sys.long_info.bits_per_digit % 5 == 0)
+ self.assert_(sys.long_info.sizeof_digit >= 1)
self.assert_(isinstance(sys.hexversion, int))
self.assert_(isinstance(sys.maxint, int))
if test.test_support.have_unicode:
@@ -417,6 +420,7 @@
if hasattr(sys, "gettotalrefcount"):
self.header += '2P'
self.vheader += '2P'
+ self.longdigit = sys.long_info.sizeof_digit
import _testcapi
self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
self.file = open(test.test_support.TESTFN, 'wb')
@@ -594,11 +598,12 @@
check(reversed([]), size(h + 'lP'))
# long
check(0L, size(vh))
- check(1L, size(vh) + self.H)
- check(-1L, size(vh) + self.H)
- check(32768L, size(vh) + 2*self.H)
- check(32768L*32768L-1, size(vh) + 2*self.H)
- check(32768L*32768L, size(vh) + 3*self.H)
+ check(1L, size(vh) + self.longdigit)
+ check(-1L, size(vh) + self.longdigit)
+ PyLong_BASE = 2**sys.long_info.bits_per_digit
+ check(PyLong_BASE, size(vh) + 2*self.longdigit)
+ check(PyLong_BASE**2-1, size(vh) + 2*self.longdigit)
+ check(PyLong_BASE**2, size(vh) + 3*self.longdigit)
# module
check(unittest, size(h + 'P'))
# None