[Python-Dev] test_coercion failing

[Tim Peters]

Everyone!  Run this program under current CVS:

x = 0.0
print "%.17g" % -x
print "%+.17g" % -x

What do you get?  WinTel prints "0" for the first and "+0" for the second.

C89 doesn't define the results.

C99 requires "-0" for both (on boxes with signed floating zeroes, which is
virtually all boxes today due to IEEE 754).

I don't want to argue the C rules, I just want to know whether this *does*
vary across current platforms.