<?php
/* $Id$ */
namespace Mammut\DB\Sql\Expression;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

/**
 * Expression which calculates something
 *
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\DB\Sql
 */
interface iExprCalc extends iExpression {
	// arithmetic opertator types
	const OP_ADD = '+';
	const OP_SUB = '-';
	const OP_MULT = '*';
	const OP_DIV = '/';
	const OP_MOD = '%';
}