Rounding function:


WinCalc PRO supports manual and automatic rounding to 1, 2, 3 or 4 decimal places respectively to 2 decimal places by using "Rappen-Rounding".

The program uses asymmetric arithmetic rounding. For details take a look at the spreadsheet below. On the tape, a rounded value is indicated by "«".


Automatic rounding:

By checking the "RND" checkbox in the main screen, all subtotals (calculated by pressing 1x [Enter]) will automatically be rounded to the selected number of decimal places. The number of decimal places ("RND 0-4" or "RND R" for "Rappen-Rounding") can be set by using the "<" / ">" buttons next to the "RND" checkbox. By pressing the undo button in the main screen you can undo an automatic rounding. The number of decimal places can also be changed by pressing the [<] or [>] keys on your keyboard.


Manually operated rounding:

By using the spacebar, the current subtotal (calculated by pressing 1x [Enter]) will be rounded to the defined number of decimal places. The "RND" checkbox has to be unchecked to avoid automatic rounding.


"Rappen-Rounding":

The "Rappen-Rounding" is common in Switzerland. Using this type of rounding, the second decimal digit will always be rounded to 0 respectively to 5. Set the indicator for the number of decimal places to "R" to use the "Rappen-Rounding". For further details take a look at the spreadsheet below.


Rounding Examples:

Rounding of a positive number to 2 decimal digits	Rounding of a negative number to 2 decimal digits	"Rappen-Rounding" of a positive number	"Rappen-Rounding" of a negative number
1.111 = 1.11	-1.111 = -1.11	1.11 = 1.10	-1.11 = -1.10
1.112 = 1.11	-1.112 = -1.11	1.12 = 1.10	-1.12 = -1.10
1.113 = 1.11	-1.113 = -1.11	1.13 = 1.15	-1.13 = -1.15
1.114 = 1.11	-1.114 = -1.11	1.14 = 1.15	-1.14 = -1.15
1.115 = 1.12	-1.115 = -1.12	1.15 = 1.15	-1.15 = -1.15
1.116 = 1.12	-1.116 = -1.12	1.16 = 1.15	-1.16 = -1.15
1.117 = 1.12	-1.117 = -1.12	1.17 = 1.15	-1.17 = -1.15
1.118 = 1.12	-1.118 = -1.12	1.18 = 1.20	-1.18 = -1.20
1.119 = 1.12	-1.119 = -1.12	1.19 = 1.20	-1.19 = -1.20

Calculating range of the rounding function:

Please consider the calculating range of the rounding function which is different to the normal calculating range of WinCalc PRO (also have a look to the "technical specifications"). If a positive numbers is greater or a negative number is less than the calculating range of the rounding function, WinCalc PRO won't round the value, neither manually nor automatically (error message "RND Error").

Decimal digits to be rounded to	Calculating range of the rounding function (positive or negative numbers)
0	999,999,999,999,999
1	99,999,999,999,999
2	9,999,999,999,999
3	999,999,999,999
4	99,999,999,999
Rappen-Rounding	9,999,999,999,999