getGroupingRegExp = function(groupingSeparator, groupingSize, groupingBaseSize) {
		var sGroupingEscaped = quote(groupingSeparator);
		return new RegExp("^\\d+"
			+ "(?:" + sGroupingEscaped + "?" + "\\d{" + groupingSize + "}" + ")*"
			+ "" + sGroupingEscaped + "?" + "\\d{" + groupingBaseSize + "}" + "$");
	}
@lends sap.ui.core.format.NumberFormat.prototype