Copyright (C) 1990, Digital Equipment Corporation.                        
 All rights reserved.                                                      
 See the file COPYRIGHT for a full description.                            
 Last modified on Fri Feb 25 12:32:48 PST 1994 by kalsow                   
      modified on Wed Dec  8 17:33:29 PST 1993 by heydon                   

This interface defines variables for the IEEE floating-point values -infinity, +infinity, and NaN (not a number) for each of the three floating-point types. On non-IEEE implementations, these variables have arbitrary values.

VAR (* CONST after initialization *)
  RealNegInf, RealPosInf, RealNan: REAL;
  LongNegInf, LongPosInf, LongNan: LONGREAL;
  ExtdNegInf, ExtdPosInf, ExtdNan: EXTENDED;

END IEEESpecial.