Round
The Round function rounds a value to a higher or lower number.
Syntax
variable = Round ( Number, Decimal )
Example
The following program shows the use of the Round, Ceiling, and Floor functions. You can see the results of each function by using the software's numeric display to enter a value into the Number variable or to change the Decimal variable in Round.
Public Number, Decimal, RoundVar, FloorVar, CeilVar
BeginProg
Number=1234.5678
Decimal=1
Scan (1,Sec,3,0)
RoundVar=Round(Number,Decimal)
CeilVar=Ceiling(Number)
FloorVar=Floor(Number)
NextScan
EndProg
Remarks
The Round function rounds the Number up if the determining digit is 5 or greater; otherwise, it rounds down. This is commonly referred to as arithmetic rounding.
NOTE: Negative numbers effectively round down if the determining digit is greater than 5 and up if it is less than 5; for example, -8.6 rounds to -9.
To round a value up or down to an integer, use the Ceiling function or the Floor function.
Parameters
Number
The value on which to perform the rounding operation. It can be any value or an expression.
Type: Expression
Decimal
Used to determine how many decimal places to keep. If Decimal is set to 0, the result will be an integer. If Decimal is a negative number, it specifies the power of 10 to which you want to round.
Type: Variable or Constant
Examples:
| Function | Return |
|---|---|
| Round(172.345, 2) | 172.35 |
| Round(-172.345,2) | -172.35 |
| Round(172.345, 0) | 172 |
| Round(172.234, -1) | 170 |
| Round(172.234, -2) | 200 |