104 arith_err(const char *s)  in arith_err()  function
126 		arith_err("variable not set");  in arith_lookupvarint()
138 		arith_err("variable contains non-numeric value");  in arith_lookupvarint()
164 		arith_err("token error");  in do_binop()
168 			arith_err("division by zero");  in do_binop()
170 			arith_err("divide error");  in do_binop()
219 			arith_err("expecting ')'");  in primary()
253 			arith_err("incr/decr require var name");  in primary()
263 		arith_err("expecting primary");  in primary()
369 		arith_err("expecting ':'");  in cond()
457 		arith_err("expecting end of expression");  in arith()