Comment #2 on issue 2979 by [email protected]: > and >= are changed into <
and <=
http://code.google.com/p/sympy/issues/detail?id=2979
I don't follow exactly what the direction flag would do.
I see two basic ways to fix this:
1. Keep it like it is, but keep track inside the Inequality object which
way it was created by, and use that for printing (is this what you meant
with the direction flag?). This would make (x > y) == (y < x) compare to
True (which is not the same as x > y == y < x by the way), as we could just
ignore the direction in __eq__ (though I'm not sure if this is a good idea
or not).
2. Alternately, we could make two separate classes (LessThan and
GreaterThan), and create properties that refer to the bigger and smaller
sides (what should these be called?). Then, any algorithm that wants to be
agnostic about direction can just use those. We could still keep .lhs
and .rhs, in case you want to refer to a specific directional side (of
course, Gt.lhs and Gt.rhs would change from what they are now, but they
could be considered wrong now).
Any thoughts on which would be a cleaner solution?
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