The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
column and around 3-5% gives "ERROR" as result even though the statement is
true. Urgent help needed!

If you format a cell wit =A-b-c to display 15 digits you'll probably find that isn't not exactly zero.

Look here for a possible explanation

http://support.microsoft.com/kb/78113

--
Kind regards,

Niek Otten
Microsoft MVP - Excel

"yhoy" wrote in message ...
| The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
| column and around 3-5% gives "ERROR" as result even though the statement is
| true. Urgent help needed!

Out of curiosity, I followed your instruction below and display 30 digits
and it's still all zero. Does that sound right?


"Niek Otten" wrote:

If you format a cell wit =A-b-c to display 15 digits you'll probably find that isn't not exactly zero.

Look here for a possible explanation

http://support.microsoft.com/kb/78113

--
Kind regards,

Niek Otten
Microsoft MVP - Excel

"yhoy" wrote in message ...
| The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
| column and around 3-5% gives "ERROR" as result even though the statement is
| true. Urgent help needed!

No. Follow Ron's advice

--
Kind regards,

Niek Otten
Microsoft MVP - Excel

"yhoy" wrote in message ...
|
| Out of curiosity, I followed your instruction below and display 30 digits
| and it's still all zero. Does that sound right?
|
|
| "Niek Otten" wrote:
|
| If you format a cell wit =A-b-c to display 15 digits you'll probably find that isn't not exactly zero.
|
| Look here for a possible explanation
|
| http://support.microsoft.com/kb/78113
|
| --
| Kind regards,
|
| Niek Otten
| Microsoft MVP - Excel
|
| "yhoy" wrote in message ...
| | The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
| | column and around 3-5% gives "ERROR" as result even though the statement is
| | true. Urgent help needed!
|
|
|

Try multiplying the result by 1E16 or something, and see what you get then.
--
David Biddulph

"yhoy" wrote in message
...

Out of curiosity, I followed your instruction below and display 30 digits
and it's still all zero. Does that sound right?


"Niek Otten" wrote:

If you format a cell wit =A-b-c to display 15 digits you'll probably find
that isn't not exactly zero.

Look here for a possible explanation

http://support.microsoft.com/kb/78113

--
Kind regards,

Niek Otten
Microsoft MVP - Excel

"yhoy" wrote in message
...
| The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
| column and around 3-5% gives "ERROR" as result even though the
statement is
| true. Urgent help needed!

On Tue, 12 Feb 2008 03:07:00 -0800, yhoy
wrote:

The formula is pretty simple -- if(A-b-c=0, "OK", "ERROR"). Use it on a
column and around 3-5% gives "ERROR" as result even though the statement is
true. Urgent help needed!

Try

if(round(a-b-c,5) = 0, "OK","ERROR")

Change the 5 to some value that gives you sufficient precision for your
calculation.

Look up "rounding errors" in this NG and also in the MSKB
--ron