Method isNaN

vm/JavaAPI/src/java/lang/Double.java:173–175

Returns true if this Double value is the special Not-a-Number (NaN) value.

()

     * Returns true if this Double value is the special Not-a-Number (NaN) value.
     */
    public boolean isNaN(){
        return isNaN(value);
    }

    /**
     * Indicates whether the specified double is a <em>Not-a-Number (NaN)</em>