Github user mattf-horton commented on the issue:
https://github.com/apache/metron/pull/681
BTW, +/- Infinity **are** considered "real" values (essentially as tho via
rounding) and can be compared with equality and inequality. NaN is considered
a nonsensical or impossible-to-calculate value, not a number at all. The fact
that 1.0/0.0 returns positive Infinity rather than NaN is a mathematical
choice, presumably based on limit logic and a preference for continuity. (I
didn't write the standard! :-)
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