--- gforth/float.fs	2000/01/17 00:04:29	1.30
+++ gforth/float.fs	2000/09/23 12:27:46	1.33
@@ -52,12 +52,10 @@
     here dup dfaligned swap ?DO  bl c,  LOOP ;
 
 1 sfloats (Field) sfloat+ , ( sf-addr1 -- sf-addr2 ) \ float-ext s-float-plus
-\G Increment @i{sf-addr1} by the number of address units corresponding to the size of
-\G a single-precision IEEE floating-point number, to give @i{sf-addr2}.""
+\G @code{1 sfloats +}.
 
 1 dfloats (Field) dfloat+ , ( df-addr1 -- df-addr2 ) \ float-ext d-float-plus
-\G Increment @i{df-addr1} by the number of address units corresponding to the size of
-\G a double-precision IEEE floating-point number, to give @i{df-addr2}.""
+\G @code{1 dfloats +}.
 
 : f, ( f -- ) \ gforth
     \G Reserve data space for one floating-point number and store
@@ -102,7 +100,7 @@ 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<
   IF    '0 emit
@@ -112,14 +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 . ;
@@ -201,12 +204,12 @@ IS interpreter-notfound
 	f- fabs frot frot f* f< ;
 
 : f~ ( r1 r2 r3 -- flag ) \ float-ext f-proximate
-    \G ANS Forth medley: r3>0: @code{f~abs}; r3=0: r1=r2; r3<0: @code{fnegate f~rel}.
+    \G ANS Forth medley for comparing r1 and r2 for equality: r3>0:
+    \G @code{f~abs}; r3=0: bitwise comparison; r3<0: @code{fnegate f~rel}.
     fdup f0=
-    IF
-	fdrop f=  \ !! this does not work, because 0=-0 with f= on Linux-Intel
-	          \ the standard says they should compare unequal
-		  \ the comparison should be done with COMPARE
+    IF \ bitwise comparison
+	fp@ float+ 1 floats over float+ -text 0=
+	fdrop fdrop fdrop
 	EXIT
     THEN
     fdup f0>