cit_util/src/SIsuffix.i3

  Copyright (c) 2000 California Institute of Technology                    
  All rights reserved.                                                     
  Department of Computer Science                                           
  Pasadena, CA 91125.                                                      
                                                                           
  Author: Mika Nystrom <mika@cs.caltech.edu>                               
                                                                           
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  and its documentation for any purpose and without fee is hereby          
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  export license.                                                          
                                                                           
 $Id: SIsuffix.i3.html,v 1.3 2010-04-29 17:17:56 wagner Exp $ 


INTERFACE SIsuffix;
IMPORT FloatMode, Lex;

EXCEPTION
  OutOfRange;
  UnknownSuffix;

 parse numbers that have appended SI suffixes. (or dont) 


 If the routines are called with a mode of Base10, the standard SI 
 suffixes will be used.  If Base2 is used, then k is 1024, etc.    


TYPE Mode = { Base10, Base2 };

PROCEDURE Int(text : TEXT; mode := Mode.Base10) : INTEGER RAISES { OutOfRange, UnknownSuffix, FloatMode.Trap, Lex.Error } ;

PROCEDURE LongReal(text : TEXT; mode := Mode.Base10) : LONGREAL RAISES { UnknownSuffix, FloatMode.Trap, Lex.Error };

PROCEDURE Real(text : TEXT; mode := Mode.Base10) : REAL RAISES { UnknownSuffix, FloatMode.Trap, Lex.Error };

TYPE
  T = Suffix;

  Suffix = RECORD
    char : CHAR;
    size : LONGREAL;
    name : TEXT;
    geeky : LONGREAL := 0.0d0
  END;

 n.b. deka is non-standard.  should be da according to SI 
 also micro should be mu (Greek letter) 
 kilo could perhaps be K as well 


CONST
  KiloGeek = FLOAT(1024, LONGREAL);

VAR  List : ARRAY [0..15] OF T;

CONST
  Brand = "SIsuffix";

END SIsuffix.