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  Title:    Examine
 
  Syntax:   FXAM
 
  See also: Status Word
 
  Description:
 
     Reports the contents of ST in the condition flags of the status
     word.
 
     The condition codes for FXAM are as follows:
 
     C3     C2     C1     C0     Meaning
 
     0      0      0      0      + Unnormal*
     0      0      0      1      + NAN
     0      0      1      0      - Unnormal*
     0      0      1      1      - NAN
     0      1      0      0      + Normal
     0      1      0      1      + Infinity
     0      1      1      0      - Normal
     0      1      1      1      - Infinity
     1      0      0      0      + 0
     1      0      0      1      Empty
     1      0      1      0      - 0
     1      0      1      1      Empty
     1      1      0      0      + Denormal
     1      1      0      1      Empty*
     1      1      1      0      - Denormal
     1      1      1      1      Empty*
 
     * Not used on the 80387/486 processors. Unnormals are not supported by
       the 80387/486. Also, the 80387/486 processors use two codes instead
       of four to identify empty registers.
                                    -♦-