[SciPy-dev] signbit and -inf

Darren Dale dd55 at cornell.edu
Sun Oct 16 13:33:13 CDT 2005


I tried testing the svn new_core this morning, and get three error messages, 
each ultimately caused by signbit(-inf) returning False instead of True. Has 
anyone else observed this?

Darren

test(level=1, verbosity=0)
======================================================================
FAIL: check_generic (scipy.base.type_check.test_type_check.test_isneginf)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/scipy/base/tests/test_type_check.py", 
line 193, in check_generic
    assert(vals[0] == 1)
AssertionError

======================================================================
FAIL: check_generic (scipy.base.type_check.test_type_check.test_isposinf)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/scipy/base/tests/test_type_check.py", 
line 186, in check_generic
    assert(vals[0] == 0)
AssertionError

======================================================================
FAIL: check_generic (scipy.base.type_check.test_type_check.test_nan_to_num)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/scipy/base/tests/test_type_check.py", 
line 200, in check_generic
    assert_all(vals[0] < -1e10) and assert_all(isfinite(vals[0]))
  File "/usr/lib/python2.4/site-packages/scipy/base/tests/test_type_check.py", 
line 12, in assert_all
    assert(all(x)), x
AssertionError: False

----------------------------------------------------------------------
Ran 135 tests in 0.211s




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