I keep running into this type of problem:

user=> (- 12.305 12.3049)
9.999999999976694E-5

The computer (probably the JVM) has just lied to me.  Any fourth grade
student will know that this does not equal 0.0001.  This would be less
of a problem is the JVM was consistent; if it were consistent then the
following equality would be true:

user=> (= 0.0001 (- 12.305 12.3049))
false

Now it has lied to me again!

I need a method to reliably compare two numbers.  My first choice
would be to have the JVM compute (- 12.305 12.3049) correctly.
Barring that, I need a way to, without fail, compute the truthfulness
of the following: =, <, >, <=, >=.

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