FHIRPath Function: precision

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If the input collection contains a single item, this function will return the number of digits of precision. {:.stu}

The function can only be used with Decimal, Date, DateTime, and Time values. {:.stu}

If the input collection is empty, the result is empty. {:.stu}

If the input collection contains multiple items, the evaluation of the expression will end and signal an error to the calling environment. {:.stu}

For Decimal values, the function returns the number of digits of precision after the decimal place in the input value. {:.stu}

1.58700.precision() // 5

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For Date and DateTime values, the function returns the number of digits of precision in the input value. {:.stu}

@2014.precision() // 4
@2014-01-05T10:30:00.000.precision() // 17
@T10:30.precision() // 4
@T10:30:00.000.precision() // 9

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Summary

• Category: Utility functions
• Section: 5.10.7
• Return Type: Integer
• Empty Input Result: empty
• Errors on Multiple Input: true

Description

If the input collection contains a single item, this function will return the number of digits of precision. The function can only be used with Decimal, Date, DateTime, and Time values.

Arguments

• none

Type Mapping

• Decimal-Integer
• Date-Integer
• DateTime-Integer
• Time-Integer

Example

1.58700.precision() // 5
@2014.precision() // 4
@2014-01-05T10:30:00.000.precision() // 17
@T10:30.precision() // 4
@T10:30:00.000.precision() // 9