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Text lesson

scalb()

Example

Return numbers multiplied by multiples of 2.

System.out.println(Math.scalb(1.5, 4));
System.out.println(Math.scalb(1.0, 5));
System.out.println(Math.scalb(1.2, 0));
System.out.println(Math.scalb(1.85, 10));

Definition and Usage

The scalb() method yields the outcome of the expression x times 2 raised to the power of y, where x is a floating-point number and y is an integer.

Syntax

One of the following:

public static double scalb(double x, int y)

public static float scalb(float x, int y)

Parameter Values

Parameter	Description
x	“Necessary. The value to be multiplied by a power of 2.”
y	“Necessary. The exponent for the base of 2.”

Technical Details

Returns:	A numerical value, either a double or float, representing the outcome of the expression $\cdot 2^y$ .
Java version:	1.6+