--- gforth/float.fs 2000/08/09 20:04:05 1.31 +++ gforth/float.fs 2001/08/07 09:39:30 1.35 @@ -16,7 +16,7 @@ \ 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. +\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. \ 1 cells 4 = [IF] \ ' cells Alias sfloats @@ -100,9 +100,9 @@ DOES> ( -- r ) IF '- emit THEN ; : f. ( r -- ) \ float-ext f-dot -\G Display (the floating-point number) @i{r} using fixed-point notation, +\G Display (the floating-point number) @i{r} without exponent, \G followed by a space. - f$ dup >r 0< + f$ dup >r 0<= IF '0 emit ELSE scratch r@ min type r@ precision - zeros THEN '. emit r@ negate zeros @@ -110,14 +110,19 @@ DOES> ( -- r ) \ I'm afraid this does not really implement ansi semantics wrt precision. \ Shouldn't precision indicate the number of places shown after the point? +\ Why do you think so? ANS Forth appears ambiguous on this point. -anton. + : fe. ( r -- ) \ float-ext f-e-dot -\G Display @i{r} using engineering notation, followed by a space. +\G Display @i{r} using engineering notation (with exponent dividable +\G by 3), followed by a space. f$ 1- s>d 3 fm/mod 3 * >r 1+ >r - scratch r@ min type '. emit scratch r> /string type + scratch r@ tuck min tuck - >r type r> zeros + '. emit scratch r> /string type 'E emit r> . ; : fs. ( r -- ) \ float-ext f-s-dot -\G Display @i{r} using scientific notation, followed by a space. +\G Display @i{r} using scientific notation (with exponent), followed +\G by a space. f$ 1- scratch over c@ emit '. emit 1 /string type 'E emit . ;