Commit 2c6934a3 by pazsan

### factored out NaN and infinity handling

parent 76cfe620
 ... ... @@ -4,19 +4,18 @@ [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ; : falign ( -- ) here dup aligned swap here dup faligned swap ?DO bl c, LOOP ; : f, ( f -- ) here 1 floats allot f! ; \ !! have create produce faligned pfas : fconstant ( r -- ) Create falign f, DOES> faligned f@ ; falign here f, Create A, DOES> @ f@ ; : fvariable Create falign 0 f, DOES> faligned ; falign here 0. d>f f, AConstant ; : fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; ... ... @@ -34,30 +33,31 @@ : -zeros ( addr u -- addr' u' ) BEGIN dup WHILE 1- 2dup + c@ '0 <> UNTIL 1+ THEN ; : f. ( r -- ) scratch represent 0= IF 2drop scratch 3 min type EXIT THEN IF '- emit THEN dup >r 0<= IF '0 emit : f\$ ( f -- n ) scratch represent 0= IF 2drop scratch 3 min type rdrop EXIT THEN IF '- emit THEN ; : f. ( r -- ) f\$ dup >r 0< IF '0 emit ELSE scratch r@ min type r@ precision - zeros THEN '. emit r@ negate zeros scratch r> 0 max /string 0 max -zeros type space ; \ I'm afraid this does not really implement ansi semantics wrt precision. \ Shouldn't precision indicate the number of places shown after the point? : fe. ( r -- ) scratch represent 0= IF 2drop scratch 3 min type EXIT THEN IF '- emit THEN 1- s>d 3 fm/mod 3 * >r 1+ >r : fe. ( r -- ) f\$ 1- s>d 3 fm/mod 3 * >r 1+ >r scratch r@ min type '. emit scratch r> /string type 'E emit r> . ; : fs. ( r -- ) scratch represent 0= IF 2drop scratch 3 min type EXIT THEN IF '- emit THEN 1- >r scratch 1 min type '. emit scratch 1 /string type 'E emit r> . ; : fs. ( r -- ) f\$ 1- scratch over c@ emit '. emit 1 /string type 'E emit . ; : fnumber ( string -- r / ) dup count >float 0= IF defers notfound ELSE drop THEN ; : fnumber ( string -- r / ) ?dup IF dup count >float 0= IF defers notfound ELSE drop state @ IF postpone FLiteral THEN THEN THEN ; ' fnumber IS notfound ... ...
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