Java Number Negate negateExact(double a)

Description

Returns the negation of the argument, throwing an exception if the result exceeds a double .

License

Open Source License

Parameter

Parameter	Description
a	the value to negate

Exception

Parameter	Description
ArithmeticException	if the result overflows a double

Return

the result

Declaration

public static double negateExact(double a) 

Method Source Code

//package com.java2s;

public class Main {
    /**//ww w  .  j  av  a2  s .  c o  m
     * Returns the negation of the argument, throwing an exception if the result exceeds a {@code double}.
     *
     * @param a
     *          the value to negate
     * @return the result
     * @throws ArithmeticException
     *           if the result overflows a double
     */
    public static double negateExact(double a) {
        if (a == Double.MAX_VALUE || a == Double.MIN_VALUE) {
            throw new ArithmeticException("double overflow");
        }

        return -a;
    }
}

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