fixednum.sa


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-- Copyright (C) 2000 by K Hopper, University of Waikato, New Zealand        --
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abstract class $FIXED_FMT < $FMT

abstract class $FIXED_FMT < $FMT is -- This class models a value which requires to be represented in -- a numeric fixed point format (ie no exponent). -- Version 1.1 Mar 99. Copyright K Hopper, U of Waikato -- Development History -- ------------------- -- Date Who By Detail -- ---- ------ ------ -- 11 Feb 99 kh Original after FMT/DESCR confusion -- 29 Mar 99 kh Revised for V8 of text classes fmt( descr : FIXED_DESCR, lib : LIBCHARS ) : STR ; -- This routine formats fixed point (numeric) formatting types using the given repertoire and encoding. fmt( descr : FIXED_DESCR ) : STR ; -- This routine formats fixed point (numeric) formatting types using -- a default repertoire and encoding. end ; -- $FIXED_FMT

abstract class $FIXED_DESCR < $EXACT_DESCR

abstract class $FIXED_DESCR < $EXACT_DESCR is -- This class models the necessary descrption values required when -- rendering a fixed point numeric value. -- Version 1.0 Sep 98. Copyright K Hopper, U of Waikato -- Development History -- ------------------- -- Date Who By Detail -- ---- ------ ------ -- 7 Sep 98 kh Original after Modula-2 library. precision : CARD ; end ; -- $FIXED_DESCR

class FIXED_DESCR < $FIXED_DESCR

class FIXED_DESCR < $FIXED_DESCR is -- This class implements a fixed point numeric formatting descriptor. -- Version 1.0 Sep 98. Copyright K Hopper, U of Waikato -- Development History -- ------------------- -- Date Who By Detail -- ---- ------ ------ -- 7 Sep 98 kh Original after Modula-2 library. readonly attr filler : CHAR_CODE ; readonly attr whole_digits : CARD ; readonly attr precision : CARD ; readonly attr width : CARD ; -- minimum width readonly attr val_sign : BOOL ; create( fill : CHAR_CODE, whole, places : CARD, val_force : BOOL ) : SAME is -- This is the single routine in this class. It returns a newly created -- object for use when formatting. me : SAME := new ; me.filler := fill ; me.whole_digits := whole ; me.precision := places ; me.val_sign := val_force ; me.width := whole + places + 1 ; if val_force then me .width := me.width + 1 end ; return me end ; end ; -- FIXED_DESCR