Method isMathSign

MathParser/src/com/aghajari/math/MathParser.java:814–819

@return True if src exists on supported operations, False otherwise

(String src)

     * @return True if src exists on supported operations, False otherwise
     */
    static boolean isMathSign(String src) {
        src = src.trim();
        if (src.isEmpty())
            return false;
        return isMathSign(src.charAt(0));
    }

    /**
     * @return True if src exists on supported operations, False otherwise