fltnum.sa


Generated by gen_html_sa_files from ICSI. Contact gomes@icsi.berkeley.edu for details
 
------------------------->  GNU Sather - sourcefile  <-------------------------
-- Copyright (C) 2000 by K Hopper, University of Waikato, New Zealand        --
-- This file is part of the GNU Sather library. It is free software; you may --
-- redistribute  and/or modify it under the terms of the GNU Library General --
-- Public  License (LGPL)  as published  by the  Free  Software  Foundation; --
-- either version 2 of the license, or (at your option) any later version.   --
-- This  library  is distributed  in the  hope that it will  be  useful, but --
-- WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See Doc/LGPL for more details.       --
-- The license text is also available from:  Free Software Foundation, Inc., --
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA                     --
-------------->  Please email comments to <bug-sather@gnu.org>  <--------------


abstract class $FLT_FMT < $FMT

abstract class $FLT_FMT < $FMT is -- This abstract class models a value which requires a numeric plus -- exponent kind of format layout. -- 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 : FLT_DESCR, lib : LIBCHARS ) : STR ; -- This routine formats floating point numeric formatting types using -- the given repertoire and encoding. fmt( descr : FLT_DESCR ) : STR ; -- This routine formats floating point numeric formatting types using -- a default repertoire and encoding. end ; -- $FLT_FMT

abstract class $FLT_DESCR < $FIXED_DESCR

abstract class $FLT_DESCR < $FIXED_DESCR is -- This abstract class models the layot components for formatting -- a floating 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. exponent_size : CARD ; -- in exponent -- If this is zero then the natural length of the exponent will be used. val_sign : BOOL ; exp_sign : BOOL ; end ; -- $FLT_DESCR

class FLT_DESCR < $FLT_DESCR

class FLT_DESCR < $FLT_DESCR is -- This implementation class implements a floating poin number layout -- description. -- 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 width : CARD ; -- minimum width! readonly attr whole_digits : CARD ; -- before decimal point readonly attr precision : CARD ; -- after decimal point readonly attr exponent_size : CARD ; -- in exponent -- If any of the above three are zero then the natural length of that -- component will be used. readonly attr val_sign : BOOL ; readonly attr exp_sign : BOOL ; create( fill : CHAR_CODE, whole, places, exp : CARD, val_force, exp_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.exponent_size := exp ; me.val_sign := val_force ; me.exp_sign := exp_force ; me.width := whole + places + exponent_size ; if places > 0 then -- decimal mark needed me.width := me.width + 1 end ; if exp > 0 then -- exponent mark needed me.width := me.width + 1 end ; if val_force then -- mandatory sign me.width := me.width + 1 end ; if exp_force then -- mandatory sign me.width := me.width + 1 end ; return me end ; end ; -- FLT_DESCR