[O] rounding vs cutting

[Uwe Brauer]

Hi   Please look at the following examples:  |  org1 |  org2 | 
org1 + org2 | org1 + org2 | org1 | org2 | result2 | 
|-------+-------+-------------+-------------+------+------+---------| 
| 1.253 | 1.453 |       2.706 |         2.7 |  1.3 |  1.5 | 2.8 
| #+TBLFM: $3=$1+$2::$4=$1+$2; E f-1::$5=$1;E f-1::$6=$2; E 
f-1::$7=$5+$6  | <>    | <>    | <>    | <>    |           | 
|     | | org1  | org2  | res1  | round | orground1 | orground2 | 
| |-------+-------+-------+-------+-----------+-----------+-----| 
| 1.253 | 1.453 | 2.706 | 2.7   |       1.3 |       1.5 | 2.8 | 
#+TBLFM: $3=$1+$2::$4=$3;%.1f::$5=$1;%.1f::$6=$2;%.1f::$7=$5+$6 
(BTW, what is the difference between E f-1 and ;%.1f?)

In any case it seems that the rounding in calc is more a cutting 
that is the actual value of column 1 and 2 are not saved somewhere 
but instead are cut since the result in column 4 and 7 do not 
coincide (but they do so in other spreadsheets as in libreoffice 
and others).

Or is there something I miss here?

Uwe Brauer