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FYL2X             Y * Log2(X)                 Exception Flags: P

FYLOG2X

       Logic:      T1 . ST(1) * Log2(ST)
                   pop stack
                   ST . T1

     FYL2X calculates Y * Log2(X). X comes from ST and Y from ST(1). This
     instruction pops the stack and places Y * Log2(X) in the new ST.

     Operands must be in the range 0 < X < ., -. < Y < +.. You can use
     this formula to convert to other bases:

                                   Log X
                                      2
                         Log X =   ------
                            n      Log n
                                      2

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   Operands            Clocks         Bytes           Example
   FYL2X               900-1100         3             FYL2X
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