HelenOS sources

OPERATOR_NONE     410 uspace/app/calculator/calculator.c 		return OPERATOR_NONE;
OPERATOR_NONE     416 uspace/app/calculator/calculator.c 	return (get_operator(c) != OPERATOR_NONE);
OPERATOR_NONE     660 uspace/app/calculator/calculator.c 	operator_t last_operator = OPERATOR_NONE;