ES|QL SCALB function
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Serverless
Generally available
Stack
9.1+
Generally available since 9.1
Returns the result of multiplying a number by 2 raised to a scale factor.
d- Numeric expression for the multiplier. If
null, the function returnsnull. scaleFactor-
Numeric expression for the scale factor. If
null, the function returnsnull.
Returns the result of d * 2 ^ scaleFactor, Similar to Java's scalb function. Result is rounded as if performed by a single correctly rounded floating-point multiply to a member of the double value set.
| d | scaleFactor | result |
|---|---|---|
| double | integer | double |
| double | long | double |
| integer | integer | double |
| integer | long | double |
| long | integer | double |
| long | long | double |
| unsigned_long | integer | double |
| unsigned_long | long | double |
row x = 3.0, y = 10 | eval z = scalb(x, y)
| x:double | y:integer | z:double |
|---|---|---|
| 3.0 | 10 | 3072.0 |