Decimal value to roundup

Dear ODK team
I am calculating the decimal date time. the value comes in 3.987655 like that i want to roundup this value to 3 or 4 is this possible.

You can round numbers to a specified number of decimal places (including none) using the XPath round() function. See https://docs.opendatakit.org/form-operators-functions/#number-handling

Alternatively, if you want to truncate 3.987.. down to 3, you can use the int() function (documented same place)

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