| [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ; |
[ 1 floats 1- ] Literal + [ -1 floats ] Literal and ; |
| |
|
| : falign ( -- ) |
: falign ( -- ) |
| here dup aligned swap |
here dup faligned swap |
| ?DO bl c, LOOP ; |
?DO bl c, LOOP ; |
| |
|
| : f, ( f -- ) here 1 floats allot f! ; |
: f, ( f -- ) here 1 floats allot f! ; |
| |
|
| \ !! have create produce faligned pfas |
\ !! have create produce faligned pfas |
| : fconstant ( r -- ) |
: fconstant ( r -- ) |
| Create falign f, |
falign here f, Create A, |
| DOES> faligned f@ ; |
DOES> @ f@ ; |
| |
|
| : fvariable |
: fvariable |
| Create falign 0 f, |
falign here 0. d>f f, AConstant ; |
| DOES> faligned ; |
|
| |
|
| : fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; |
: fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; |
| |
|
| : -zeros ( addr u -- addr' u' ) |
: -zeros ( addr u -- addr' u' ) |
| BEGIN dup WHILE 1- 2dup + c@ '0 <> UNTIL 1+ THEN ; |
BEGIN dup WHILE 1- 2dup + c@ '0 <> UNTIL 1+ THEN ; |
| |
|
| : f. ( r -- ) scratch represent 0= |
: f$ ( f -- n ) scratch represent 0= |
| IF 2drop scratch 3 min type EXIT THEN |
IF 2drop scratch 3 min type rdrop EXIT THEN |
| IF '- emit THEN dup >r 0<= |
IF '- emit THEN ; |
| |
|
| |
: f. ( r -- ) f$ dup >r 0< |
| IF '0 emit |
IF '0 emit |
| ELSE scratch r@ min type r@ precision - zeros THEN |
ELSE scratch r@ min type r@ precision - zeros THEN |
| '. emit r@ negate zeros |
'. emit r@ negate zeros |
| \ I'm afraid this does not really implement ansi semantics wrt precision. |
\ I'm afraid this does not really implement ansi semantics wrt precision. |
| \ Shouldn't precision indicate the number of places shown after the point? |
\ Shouldn't precision indicate the number of places shown after the point? |
| |
|
| : fe. ( r -- ) scratch represent 0= |
: fe. ( r -- ) f$ 1- s>d 3 fm/mod 3 * >r 1+ >r |
| IF 2drop scratch 3 min type EXIT THEN |
|
| IF '- emit THEN 1- s>d 3 fm/mod 3 * >r 1+ >r |
|
| scratch r@ min type '. emit scratch r> /string type |
scratch r@ min type '. emit scratch r> /string type |
| 'E emit r> . ; |
'E emit r> . ; |
| |
|
| : fs. ( r -- ) scratch represent 0= |
: fs. ( r -- ) f$ 1- |
| IF 2drop scratch 3 min type EXIT THEN |
scratch over c@ emit '. emit 1 /string type |
| IF '- emit THEN 1- >r |
'E emit . ; |
| scratch 1 min type '. emit scratch 1 /string type |
|
| 'E emit r> . ; |
: fnumber ( string -- r / ) |
| |
?dup IF dup count >float 0= |
| : fnumber ( string -- r / ) dup count >float 0= |
IF defers notfound |
| IF defers notfound ELSE drop THEN ; |
ELSE drop state @ |
| |
IF postpone FLiteral THEN THEN THEN ; |
| |
|
| ' fnumber IS notfound |
' fnumber IS notfound |
| |
|
