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FABS              Absolute Value              Exception Flags: I

FABS

       Logic:      ST . ABS(ST)


     FABS changes the top of the stack to its own absolute value. This
     instruction is a fast way of making sure a value is greater than or
     equal to 0.

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   Operands            Clocks         Bytes           Example
   FABS                10-17            3             FABS
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