Quote:

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For example:

http://developer.java.sun.com/developer/bugParade/bugs/4857011.html

"
Example in there: The value of sine for the floating-point number Math.PI is around

1.2246467991473532E-16

while the computed value for the algorithm used in java 1.3.1 is

1.2246063538223773E-16
^

In other words, the returned result is only accurate to about 5 digits
instead of the full 15-17 digit precision of double. Instead of a 1/2
ulp or 1 ulp error, the error is about 1.64e11 ulps, over *ten
billion* ulps."

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