exp()

The exp() function returns Euler's number e (approximately 2.71828) raised to the power of the specified value.

Syntax

Parameters

NUM_EXPR

A numeric expression to use as the exponent.

Description

The exp() function applies Math.exp() to the input and returns the result as a 64-bit double. If the input is a Number type, it is internally converted using doubleValue() before processing.

Returns null if the input is null or not a number.

Error codes

N/A

Usage examples

1. Calculate e to the power of 1.

   json "{'val': 1}" | eval result = exp(val)
   | # result: 2.718281828459045
   

2. Calculate e to the power of 2.

   json "{'val': 2}" | eval result = exp(val)
   | # result: 7.38905609893065
   

3. NULL input

   json "{'val': null}" | eval result = exp(val)
   | # result: null
   

Compatibility

The exp() function is available since before Sonar 4.0.