[Cfp-interest 2971] Re: islessgreater()

[David Hough CFP]

One can build an orthogonal set of predicates and complements

false	true (<>=?)
< 	>=?
>	<=?
=	<>?
?	<>=
<>	=?
<=	>?
<?	>=

for a total of 16, and each can come in two flavors - signaling 
on unordered and quiet on unordered.    So 32 in all, and I think
those are all available in some hardware.    And it's easier to build
a complete set instead of one with some random holes.   Languages
likewise might provide all 32, even knowing that some of them will
hardly ever be used.    Especially the quiet and signaling versions
of false and true.