version 1.44, 2004/12/08 11:05:08
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version 1.53, 2007/12/31 18:40:24
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\ High level floating point 14jan94py |
\ High level floating point 14jan94py |
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\ Copyright (C) 1995,1997,2003 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1997,2003,2004,2005,2006,2007 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
\ Gforth is free software; you can redistribute it and/or |
\ modify it under the terms of the GNU General Public License |
\ modify it under the terms of the GNU General Public License |
\ as published by the Free Software Foundation; either version 2 |
\ as published by the Free Software Foundation, either version 3 |
\ of the License, or (at your option) any later version. |
\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
\ This program is distributed in the hope that it will be useful, |
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\ GNU General Public License for more details. |
\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program. If not, see http://www.gnu.org/licenses/. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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\ 1 cells 4 = [IF] |
\ 1 cells 4 = [IF] |
\ ' cells Alias sfloats |
\ ' cells Alias sfloats |
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\G enough space to align it. |
\G enough space to align it. |
here dup dfaligned swap ?DO bl c, LOOP ; |
here dup dfaligned swap ?DO bl c, LOOP ; |
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1 sfloats (Field) sfloat+ , ( sf-addr1 -- sf-addr2 ) \ float-ext s-float-plus |
(Field) sfloat+ ( sf-addr1 -- sf-addr2 ) \ float-ext s-float-plus |
\G @code{1 sfloats +}. |
\G @code{1 sfloats +}. |
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1 sfloats , |
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1 dfloats (Field) dfloat+ , ( df-addr1 -- df-addr2 ) \ float-ext d-float-plus |
(Field) dfloat+ ( df-addr1 -- df-addr2 ) \ float-ext d-float-plus |
\G @code{1 dfloats +}. |
\G @code{1 dfloats +}. |
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1 dfloats , |
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: f, ( f -- ) \ gforth |
: f, ( f -- ) \ gforth |
\G Reserve data space for one floating-point number and store |
\G Reserve data space for one floating-point number and store |
\G @i{f} in the space. |
\G @i{f} in the space. |
Line 127 DOES> ( -- r )
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Line 128 DOES> ( -- r )
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scratch over c@ emit '. emit 1 /string type |
scratch over c@ emit '. emit 1 /string type |
'E emit . ; |
'E emit . ; |
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require debugs.fs |
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: sfnumber ( c-addr u -- r true | false ) |
: sfnumber ( c-addr u -- r true | false ) |
2dup [CHAR] e scan ( c-addr u c-addr2 u2 ) |
2dup [CHAR] e scan ( c-addr u c-addr2 u2 ) |
dup 0= |
dup 0= |
Line 142 require debugs.fs
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Line 141 require debugs.fs
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2drop false |
2drop false |
THEN ; |
THEN ; |
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:noname ( c-addr u -- ) |
[ifundef] compiler-notfound1 |
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defer compiler-notfound1 |
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' no.extensions IS compiler-notfound1 |
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:noname compiler-notfound1 execute ; is compiler-notfound |
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defer interpreter-notfound1 |
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' no.extensions IS interpreter-notfound1 |
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:noname interpreter-notfound1 execute ; is interpreter-notfound |
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[then] |
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:noname ( c-addr u -- ... xt ) |
2dup sfnumber |
2dup sfnumber |
IF |
IF |
2drop POSTPONE FLiteral |
2drop [comp'] FLiteral |
ELSE |
ELSE |
defers compiler-notfound |
defers compiler-notfound1 |
ENDIF ; |
ENDIF ; |
IS compiler-notfound |
IS compiler-notfound1 |
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:noname ( c-addr u -- r ) |
:noname ( c-addr u -- ... xt ) |
2dup sfnumber |
2dup sfnumber |
IF |
IF |
2drop |
2drop ['] noop |
ELSE |
ELSE |
defers interpreter-notfound |
defers interpreter-notfound1 |
ENDIF ; |
ENDIF ; |
IS interpreter-notfound |
IS interpreter-notfound1 |
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: fvariable ( "name" -- ) \ float f-variable |
: fvariable ( "name" -- ) \ float f-variable |
Create 0.0E0 f, ; |
Create 0.0E0 f, ; |
Line 232 set-current
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Line 243 set-current
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: FMOD ( r1 r2 -- r ) |
: FMOD ( r1 r2 -- r ) |
\ remainder of r1/r2 |
\ remainder of r1/r2 |
\ !! should be implemented properly |
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FOVER FOVER F/ ftrunc F* F- ; |
FOVER FOVER F/ ftrunc F* F- ; |