Method isNaN

vm/JavaAPI/src/java/lang/Float.java:165–167

Returns true if this Float value is Not-a-Number (NaN).

()

     * Returns true if this Float value is Not-a-Number (NaN).
     */
    public boolean isNaN(){
        return value != value; 
    }

    /**
     * Returns true if the specified number is the special Not-a-Number (NaN) value.