Merged revisions 59202-59211 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r59203 | guido.van.rossum | 2007-11-27 23:38:36 +0100 (Tue, 27 Nov 2007) | 4 lines
Patch # 1507 by Mark Dickinson. Make complex(x, -0) retain the sign of
the imaginary part (as long as it's not complex).
Backport candidate?
........
r59204 | christian.heimes | 2007-11-28 00:16:44 +0100 (Wed, 28 Nov 2007) | 2 lines
Expose Py_Py3kWarningFlag as sys.py3kwarning as discussed in #1504
Also added a warning.warnpy3k() as convenient method for Python 3.x related deprecation warnings.
........
r59206 | christian.heimes | 2007-11-28 00:53:14 +0100 (Wed, 28 Nov 2007) | 1 line
I forgot to fix one occurence of new in test_descr
........
r59208 | christian.heimes | 2007-11-28 09:02:36 +0100 (Wed, 28 Nov 2007) | 1 line
Added py3kwarning to the documentation of the sys module.
........
diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py
index 5397ad6..1bb31dd 100644
--- a/Lib/test/test_complex.py
+++ b/Lib/test/test_complex.py
@@ -2,6 +2,7 @@
from test import test_support
from random import random
+from math import atan2
# These tests ensure that complex math does the right thing
@@ -207,6 +208,18 @@
self.assertAlmostEqual(complex(real=17+23j, imag=23), 17+46j)
self.assertAlmostEqual(complex(real=1+2j, imag=3+4j), -3+5j)
+ # check that the sign of a zero in the real or imaginary part
+ # is preserved when constructing from two floats. (These checks
+ # are harmless on systems without support for signed zeros.)
+ def split_zeros(x):
+ """Function that produces different results for 0. and -0."""
+ return atan2(x, -1.)
+
+ self.assertEqual(split_zeros(complex(1., 0.).imag), split_zeros(0.))
+ self.assertEqual(split_zeros(complex(1., -0.).imag), split_zeros(-0.))
+ self.assertEqual(split_zeros(complex(0., 1.).real), split_zeros(0.))
+ self.assertEqual(split_zeros(complex(-0., 1.).real), split_zeros(-0.))
+
c = 3.14 + 1j
self.assert_(complex(c) is c)
del c