Message6557

Desired behaviour in C Python 2.5,

$ python2.5
Python 2.5 (r25:51908, Nov 12 2010, 14:49:10) 
[GCC 4.1.2 20070626 (Red Hat 4.1.2-13)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> float("nan")
nan
>>> float("-nan")
nan
>>> quit()

Broken behaviour in Jython 2.5.1 on Mac,

$ jython
Jython 2.5.1 (Release_2_5_1:6813, Sep 26 2009, 13:47:54) 
[Java HotSpot(TM) 64-Bit Server VM (Apple Inc.)] on java1.6.0_24
Type "help", "copyright", "credits" or "license" for more information.
>>> float("nan") 
nan
>>> float("-nan")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for __float__: -nan
>>> quit()



Broken behaviour in Jython 2.5.2 on Linux

$ ./jython 
Jython 2.5.2 (Release_2_5_2:7206, Mar 2 2011, 23:12:06) 
[OpenJDK 64-Bit Server VM (Sun Microsystems Inc.)] on java1.6.0_17
Type "help", "copyright", "credits" or "license" for more information.
>>> float("nan") 
nan
>>> float("-nan")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for __float__: -nan
>>> quit()