from __future__
import division
# When true division is the default, get rid of this and add it to
# test_long.py instead. In the meantime, it's too obscure to try to
# trick just part of test_long into using future division.
from test
.test_support
import TestFailed
, verify
, verbose
def test_true_division():
print "long true division"
verify(huge
/ huge
== 1.0)
verify(mhuge
/ mhuge
== 1.0)
verify(huge
/ mhuge
== -1.0)
verify(mhuge
/ huge
== -1.0)
verify(1L / mhuge
== 0.0)
verify((666 * huge
+ (huge
>> 1)) / huge
== 666.5)
verify((666 * mhuge
+ (mhuge
>> 1)) / mhuge
== 666.5)
verify((666 * huge
+ (huge
>> 1)) / mhuge
== -666.5)
verify((666 * mhuge
+ (mhuge
>> 1)) / huge
== -666.5)
verify(huge
/ (huge
<< 1) == 0.5)
verify((1000000 * huge
) / huge
== 1000000)
namespace
= {'huge': huge
, 'mhuge': mhuge
}
for overflow
in ["float(huge)", "float(mhuge)",
"huge / 1", "huge / 2L", "huge / -1", "huge / -2L",
"mhuge / 100", "mhuge / 100L"]:
eval(overflow
, namespace
)
raise TestFailed("expected OverflowError from %r" % overflow
)
for underflow
in ["1 / huge", "2L / huge", "-1 / huge", "-2L / huge",
"100 / mhuge", "100L / mhuge"]:
result
= eval(underflow
, namespace
)
raise TestFailed("expected underflow to 0 from %r" % underflow
)
for zero
in ["huge / 0", "huge / 0L",
"mhuge / 0", "mhuge / 0L"]:
except ZeroDivisionError:
raise TestFailed("expected ZeroDivisionError from %r" % zero
)