Documentation/How Tos/Calc: TRUNC function
From Apache OpenOffice Wiki
Truncates a number by removing decimal places.
- returns number with at most places decimal places. Excess decimal places are simply removed, irrespective of sign.
- TRUNC(number; 0) behaves as INT(number) for positive numbers, but effectively rounds towards zero for negative numbers.
- returns 1.23. The 9 is lost.
- returns -1.234. All the 9s are lost.
If these examples do not seem to work, see Tools - Options - OpenOffice.org Calc - Calculate to check the display precision.