The java.lang.Math.nextAfter() returns the floating-point number adjacent to the first argument in the direction of the second argument. If both arguments are equal then the second argument is returned.
// datatype can be float or double.
public static dataType nextAfter(dataType st, dataType dir)
st :starting floating-point value.
dir :value indicating which of start’s neighbors or start should be returned.
This method returns the floating-point number adjacent to start in the direction of direction.
- If one of the arguments is NaN, Output is NaN
- If both arguments are signed zeros, direction is returned unchanged(as implied by the requirement of returning the second argument if the arguments compare as equal).
- If start is Double.MIN_VALUE or Float.MIN_VALUE and direction has a value such that the result should have a smaller magnitude, then a zero with the same sign as start is returned.
- If start is infinite and direction has a value such that the result should have a smaller magnitude, Double.MAX_VALUE or Float.MAX_VALUE with the same sign as start is returned.
- If start is equal to Double.MAX_VALUE or Float.MAX_VALUE and direction has a value such that the result should have a larger magnitude, an infinity with same sign as start is returned.
Example 1 :To show working of java.lang.Math.nextAfter() method.
NaN 0.0 2.8E-45 3.4028235E38 1.7976931348623155E308
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.