Diff for /gforth/float.fs between versions 1.16 and 1.21

version 1.16, 1995/10/07 17:38:12 version 1.21, 1997/05/21 20:39:25
Line 1 Line 1
 \ High level floating point                            14jan94py  \ High level floating point                            14jan94py
   
 1 cells 4 = [IF]  \ Copyright (C) 1995 Free Software Foundation, Inc.
 ' cells   Alias sfloats  
 ' cell+   Alias sfloat+  \ This file is part of Gforth.
 ' align   Alias sfalign  
 ' aligned Alias sfaligned  \ Gforth is free software; you can redistribute it and/or
 [ELSE]  \ modify it under the terms of the GNU General Public License
 : sfloats  2* 2* ;  \ as published by the Free Software Foundation; either version 2
 : sfloat+  4 + ;  \ of the License, or (at your option) any later version.
 : sfaligned ( addr -- addr' )  3 + -4 and ;  
 : sfalign ( -- )  here dup sfaligned swap ?DO  bl c,  LOOP ;  \ This program is distributed in the hope that it will be useful,
 [THEN]  \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 1 floats 8 = [IF]  \ GNU General Public License for more details.
 ' floats   Alias dfloats  
 ' float+   Alias dfloat+  \ You should have received a copy of the GNU General Public License
 ' falign   Alias dfalign  \ along with this program; if not, write to the Free Software
 ' faligned Alias dfaligned  \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 [ELSE]  
 : dfloats  2* 2* 2* ;  \ 1 cells 4 = [IF]
 : dfloat+  8 + ;  \ ' cells   Alias sfloats
 : dfaligned ( addr -- addr' )  7 + -8 and ;  \ ' cell+   Alias sfloat+
 : dfalign ( -- )  here dup dfaligned swap ?DO  bl c,  LOOP ;  \ ' align   Alias sfalign
 [THEN]  \ ' aligned Alias sfaligned
   \ [ELSE]
   \ : sfloats  2* 2* ;
   \ : sfloat+  4 + ;
   \ : sfaligned ( addr -- addr' )  3 + -4 and ;
   \ : sfalign ( -- )  here dup sfaligned swap ?DO  bl c,  LOOP ;
   \ [THEN]
   
   \ 1 floats 8 = [IF]
   \ ' floats   Alias dfloats
   \ ' float+   Alias dfloat+
   \ ' falign   Alias dfalign
   \ ' faligned Alias dfaligned
   \ [ELSE]
   \ : dfloats  2* 2* 2* ;
   \ : dfloat+  8 + ;
   \ : dfaligned ( addr -- addr' )  7 + -8 and ;
   \ : dfalign ( -- )  here dup dfaligned swap ?DO  bl c,  LOOP ;
   \ [THEN]
   
   : sfalign ( -- ) \ float-ext s-f-align
       here dup sfaligned swap ?DO  bl c,  LOOP ;
   : dfalign ( -- ) \ float-ext d-f-align
       here dup dfaligned swap ?DO  bl c,  LOOP ;
   
   1 sfloats constant sfloat+ ( sf-addr1 -- sf-addr2 ) \ float-ext s-float-plus
   dofield: lastxt code-address! \ change the constant into a field
   
   1 dfloats constant dfloat+ ( df-addr1 -- df-addr2 ) \ float-ext d-float-plus
   dofield: lastxt code-address! \ change the constant into a field
   
 : f, ( f -- )  here 1 floats allot f! ;  : f, ( f -- )  here 1 floats allot f! ;
   
 : fconstant  ( r -- ) \ float  : fconstant  ( r "name" -- ) \ float
     Create f,      Create f,
 DOES> ( -- r )  DOES> ( -- r )
     f@ ;      f@ ;
Line 69  DOES> ( -- r ) Line 98  DOES> ( -- r )
   scratch over c@ emit '. emit 1 /string type    scratch over c@ emit '. emit 1 /string type
   'E emit . ;    'E emit . ;
   
 require debugging.fs  require debugs.fs
   
 : sfnumber ( c-addr u -- r / )  : sfnumber ( c-addr u -- r true | false )
     2dup [CHAR] e scan      2dup [CHAR] e scan ( c-addr u c-addr2 u2 )
     dup 0=      dup 0=
     IF      IF
         2drop 2dup [CHAR] E scan          2drop 2dup [CHAR] E scan ( c-addr u c-addr3 u3 )
     THEN      THEN
     nip      nip
     IF      IF
         2dup >float          >float
         IF      ELSE
             2drop state @          2drop false
             IF      THEN ;
                 POSTPONE FLiteral  
             THEN  :noname ( c-addr u -- )
             EXIT      2dup sfnumber
         THEN      IF
     THEN          2drop POSTPONE FLiteral
     defers notfound ;      ELSE
           defers compiler-notfound
       ENDIF ;
   IS compiler-notfound
   
 ' sfnumber IS notfound  :noname ( c-addr u -- r )
       2dup sfnumber
       IF
           2drop
       ELSE
           defers interpreter-notfound
       ENDIF ;
   IS interpreter-notfound
   
 : fvariable ( -- )  : fvariable ( "name" -- ) \ float
     Create 0.0E0 f, ;      Create 0.0E0 f, ;
     \ does> ( -- f-addr )      \ does> ( -- f-addr )
   

Removed from v.1.16  
changed lines
  Added in v.1.21


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