round

There is another function named ‘round()’ with 2 arguments (see here).

round, function

def pure round(quantity: number): number

Returns the entered ‘quantity’ rounded to the nearest integer. If the fractional part of the ‘quantity’ is 0.5, the number is rounded to the nearest even integer.

Example

show table "" with
  round(0.5) 
  round(0.51) 
  round(1.5)  
  round(4.5)  
  round(-0.5)
  round(-0.51)
  round(-1.5)

This outputs the following table:

Remarks

Calling ‘round(x)’ or ‘round(x, 0)’ gives identical results.

Rounding method

The rounding method used here is called the bankers’ rounding (see wikipedia)..

Gradient

The gradient associated to ‘round()’ is 1, instead of 0, as the mathematical definition would suggest. The purpose of this irregular behavior is to facilate the design of discrete policies.

Recipes and Best Practices

If you want to round numbers displayed in tiles, you should not use the ‘round()’ function but rather stylecode ‘precision’ or ‘minPrecision’.

See also

• roundNext
• floor
• ceiling