Round

Input

value

Round value to 2 decimal places (halfUp)

transformation:

round

Round a number to N decimal places

source:value

parameters

decimalPlaces

Number of decimal places (0–20)

roundingMode

How to handle ties at the midpoint

Output

value
3.14
2.01
-1.68
0
1000
-0.01

* Sample inputs run locally in your browser using the same operation logic as Fontana Flow.
Results are illustrative, not connected to a workflow.

Round a number to N decimal places.

Parameters

• decimalPlaces (Decimal Places, number, optional) — Number of decimal places (0–20). Default: 2.
• roundingMode (Rounding Mode, string, optional) — How to handle ties at the midpoint. Allowed values: halfUp, halfDown, halfEven.

Field selection

• source — Field whose values this operation reads. Omit to apply to all fields on the row.
• target — Optional output field. When omitted, the source field is updated in place.

JSON Configuration

{
  "id": "op-round",
  "type": "transformation",
  "action": "round",
  "params": {
    "decimalPlaces": 2,
    "roundingMode": "halfUp"
  },
  "testInputs": [
    "3.14159",
    "2.005",
    "-1.678",
    "0.0049",
    "999.995",
    "-0.005"
  ]
}