Updated to use BigInteger.mod function for integer values, or

[manuelvcr]

Updated to use BigInteger.mod function for integer values, or BigDecimal.remainder for decimal values and avoid wrong results when we use the MOD or MODULO function with large numbers.

[mariuszgromada]

You are using tokenString - this will not work in general case, tokeString are available onlyh at the beginning, modulo function can be called also with parameters that are results of further calculations, i.e.

Expression e = new Expression("mod(2^3+sin(pi), 4*3)");

[manuelvcr]

Hi, so we can change code to user tokenValue instead of tokenString:

private String getTokenValueAsString (int tokenIndex) {
		return Double.toString(tokensList.get(tokenIndex).tokenValue);
	}

I can check if result of module is same that using my first implementation.