\ Number IO
\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program 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 the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
: pad ( -- addr ) \ core-ext
here word-pno-size + aligned ;
\ hold <# #> sign # #s 25jan92py
: hold ( char -- ) \ core
pad cell - -1 chars over +! @ c! ;
: <# ( -- ) \ core less-number-sign
pad cell - dup ! ;
: #> ( xd -- addr u ) \ core number-sign-greater
2drop pad cell - dup @ tuck - ;
: sign ( n -- ) \ core
0< IF [char] - hold THEN ;
: # ( ud1 -- ud2 ) \ core number-sign
base @ 2 max ud/mod rot 9 over <
IF
[ char A char 9 - 1- ] Literal +
THEN
[char] 0 + hold ;
: #s ( +d -- 0 0 ) \ core number-sign-s
BEGIN
# 2dup or 0=
UNTIL ;
\ print numbers 07jun92py
: d.r ( d n -- ) \ double d-dot-r
>r tuck dabs <# #s rot sign #>
r> over - spaces type ;
: ud.r ( ud n -- ) \ gforth u-d-dot-r
>r <# #s #> r> over - spaces type ;
: .r ( n1 n2 -- ) \ core-ext dot-r
>r s>d r> d.r ;
: u.r ( u n -- ) \ core-ext u-dot-r
0 swap ud.r ;
: d. ( d -- ) \ double d-dot
0 d.r space ;
: ud. ( ud -- ) \ gforth u-d-dot
0 ud.r space ;
: . ( n -- ) \ core dot
s>d d. ;
: u. ( u -- ) \ core u-dot
0 ud. ;
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