The java.lang.Math.exp() returns euler’s number e raised to the power of a double value.
- If the argument is NaN, the result is NaN.
- If the argument is positive infinity, then the result is positive infinity.
- If the argument is negative infinity, then the result is positive zero.
Syntax :
public static double exp(double a) Parameter : a : the exponent part which raises to e.
Returns :
the value ea, where e is the base of the natural logarithms.
Example : To show working of java.lang.Math.exp() function
// Java program to demonstrate working // of java.lang.Math.exp() method import java.lang.Math;
class Gfg {
// driver code
public static void main(String args[])
{
double x = 3 ;
// when both are not infinity
double result = Math.exp(x);
System.out.println(result);
double positiveInfinity =
Double.POSITIVE_INFINITY;
double negativeInfinity =
Double.NEGATIVE_INFINITY;
double nan = Double.NaN;
// when 1 is NAN
result = Math.exp(nan);
System.out.println(result);
// when one argument is +INF
result = Math.exp(positiveInfinity);
System.out.println(result);
result = Math.exp(negativeInfinity);
System.out.println(result);
}
} |
Output:
20.085536923187668 NaN Infinity 0.0