Rounding Function (Rnd)
The argument of this function is made a decimal value and then rounded in accordance with the current number of display digits setting (Norm, Fix, or Sci).
With Norm 1 or Norm 2, the argument is rounded off to 10 digits.
With Fix and Sci, the argument is rounded off to the specified digit.
When Fix 3 is the display digits setting, for example, the result of 10 ÷ 3 is displayed as 3,333, while the calculator maintains a value of 3,33333333333333 (15 digits) internally for calculation.
In the case of Rnd(10÷3) = 3,333 (with Fix 3), both the displayed value and the calculator’s internal value become 3,333.
Because of this a series of calculations will produce different results
depending on whether Rnd is used (Rnd(10÷3) × 3 = 9,999) or not used (10 ÷ 3 × 3 = 10,000).
Example: To perform the following calculations when Fix 3 is selected for the number of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3) × 3 (LineIO)
(SETUP)
(Fix)
103
3
- 10,000
(Rnd) 10
3
3
- 9,999