1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3  * Copyright (c) 2019, KAIST
4  */
5 #include <ctype.h>
6 
islower(int c)7 int islower(int c)
8 {
9 	return (c >= 'a' && c <= 'z');
10 }
11