I have discovered some odd behavior when type-hinting fns with 
^System.Double:

user=> (defn bar [^System.Double d] d)
#'user/bar
user=> (bar 1.2)
2.35293190771409E-316
user=> (bar 1)
2.35069794048985E-316

The same behavior occurs when extending double via extend-protocol or 
extend-type:

user=> (defprotocol FooProto (foo [_]))
user=> (extend-protocol FooProto System.Double (foo [d] d))
nil
user=> (foo 1.2)
2.25126584588049E-316

Any ideas?  Thanks.

-Frank Failla

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