log2 (Function)
This function returns the base 2 logarithm of p1.
Syntax
<DOUBLE> math:log2(<INT|LONG|FLOAT|DOUBLE> p1)
Query Parameters
| Name | Description | Default Value | Possible Data Types | Optional | Dynamic |
|---|---|---|---|---|---|
| p1 | The value of the parameter whose base 2 logarithm should be found. | INT LONG FLOAT DOUBLE | No | Yes |
Example 1
CREATE STREAM InValueStream (inValue double);
insert into OutMediationStream
select math:log2(inValue) as lnValue
from InValueStream;
If the inValue in the input stream is given, then the function calculates the base 2 logarithm of the same and returns the value to the output stream, OutMediationStream. For example log2(91d) returns 6.507794640198696.