public Object mod()

in src/main/java/org/apache/commons/jexl3/JexlArithmetic.java [1233:1276]
40 lines of code
13 McCabe index (conditional complexity)

    public Object mod(final Object left, final Object right) {
        if (left == null && right == null) {
            return controlNullNullOperands(JexlOperator.MOD);
        }
        final boolean strictCast = isStrict(JexlOperator.MOD);
        // if both (non-null) args fit as long
        final Number ln = asLongNumber(strictCast, left);
        final Number rn = asLongNumber(strictCast, right);
        if (ln != null && rn != null) {
            final long x = ln.longValue();
            final long y = rn.longValue();
            if (y == 0L) {
                throw new ArithmeticException("%");
            }
            final long result = x % y;
            return narrowLong(left, right,  result);
        }
        // if either are BigDecimal, use that type
        if (left instanceof BigDecimal || right instanceof BigDecimal) {
            final BigDecimal l = toBigDecimal(strictCast, left);
            final BigDecimal r = toBigDecimal(strictCast, right);
            if (BigDecimal.ZERO.equals(r)) {
                throw new ArithmeticException("%");
            }
            return l.remainder(r, getMathContext());
        }
        // if either are floating point (double or float), use double
        if (isFloatingPointNumber(left) || isFloatingPointNumber(right)) {
            final double l = toDouble(strictCast, left);
            final double r = toDouble(strictCast, right);
            if (r == 0.0) {
                throw new ArithmeticException("%");
            }
            return l % r;
        }
        // otherwise treat as BigInteger
        final BigInteger l = toBigInteger(strictCast, left);
        final BigInteger r = toBigInteger(strictCast, right);
        if (BigInteger.ZERO.equals(r)) {
            throw new ArithmeticException("%");
        }
        final BigInteger result = l.mod(r);
        return narrowBigInteger(left, right, result);
    }