The java.lang.Math.getExponent() returns the unbiased exponent used in the representation of a double or float.
Note:
- If the argument is NaN or infinite of double or float type, then the result is (Double.MAX_EXPONENT + 1) or (Float.MAX_EXPONENT + 1).
- If the argument is zero or subnormal of double or float type, then the result is (Double.MIN_EXPONENT -1) or (Float.MIN_EXPONENT -1).
Syntax :
public static int getExponent(DataType a) Parameter : a : an argument of double or float type Return : This method returns the unbiased exponent of the argument.
// Java program to demonstrate working// of java.lang.Math.getExponent() methodimport java.lang.Math; class Gfg { // driver code public static void main(String args[]) { double a = 345.65; double b = 1.0 / 0; double c = 0; // Input double value // Output unbiased exponent of it System.out.println(Math.getExponent(a)); // Input Infinity // Output (Double.MAX_EXPONENT + 1) System.out.println(Math.getExponent(b)); // Input Zero // Output (Double.MIN_EXPONENT - 1) System.out.println(Math.getExponent(c)); float d = 237.2f; float e = 1.0f / 0; float f = 0f; // Input float value // Output unbiased exponent of it System.out.println(Math.getExponent(d)); // Input Infinity // Output (Float.MAX_EXPONENT + 1) System.out.println(Math.getExponent(e)); // Input Zero // Output (Float.MIN_EXPONENT - 1) System.out.println(Math.getExponent(f)); }} |
Output:
8 1024 -1023 7 128 -127