strange bug in gettimeofday function

[Andrew Makhorin]

> I would be suspicious of floating-point rounding errors here for the
> original problem you described.  Why don't you try a test case that just 
> checks if one tv is ever less than a previous tv, without the conversions.

Because I could not reproduce the bug concerning gettimeofday out of
a complex program where it is used. Probably it works correctly. But
then I would like to know why comparison of two floating-point numbers
leads to different results: t0 is *exactly* the same as t1, nevertheless
the condition t0 > t1 is true (sometimes). That is the question.



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