FHIRPath Function: exp

{:.stu}

Returns e raised to the power of the input. {:.stu}

Accepts Decimal input types. Integer and Long types are also accepted via implicit conversion to Decimal. {:.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}

0.exp() // 1.0
(-0.0).exp() // 1.0

{:.stu}

Summary

• Category: Math
• Section: 5.8.3
• Return Type: Decimal
• Empty Input Result: empty
• Errors on Multiple Input: true

Description

Returns e raised to the power of the input.

Arguments

• none

Type Mapping

• Integer-Decimal
• Long-Decimal
• Decimal-Decimal

Example

0.exp() // 1.0
(-0.0).exp() // 1.0