nextAfter() float in Java

nextAfter(): This method is available in the Math class of Java.

Syntax:

float java.lang.Math.nextAfter(float start, double direction)

This method takes two arguments, one of type float and another of type double as its parameter. It returns the floating-point number adjacent to the first argument in the direction of the second argument. If both arguments compare as equal a value equivalent to the second argument is returned.

Special cases:

1. If either argument is a NaN, then NaN is returned.

2. If both arguments are signed zeros, a value equivalent to direction is returned.

3. If start is ±Float.MIN_VALUE and direction have a value such that the result should have a smaller magnitude, then zero with the same sign as a start is returned.

4. If the start is infinite and direction has a value such that the result should have a smaller magnitude, Float.MAX_VALUE with the same sign as the start is returned.

5. If start is equal to ± Float.MAX_VALUE and direction have a value such that the result should have a larger magnitude, an infinity with the same sign as the start is returned.

Parameters: Two parameters are required for this method.

start: starting floating-point value.

direction: value indicating which of start's neighbors or start should be returned.

Returns: The floating-point number adjacent to start in the direction of the direction.

For Example:

Math.nextAfter(199.991, 1888) = > It returns 199.99101

Approach

Java

public class NextAfterFloat {
    public static void main(String[] args) {

        float start = (float) 199.991;
        double direction = 1888;
        System.out.println(Math.nextAfter(start, direction));

    }
}

Output:

199.99101