ref: 9e2ce8d610b9eacac34979540ed8f6dea47b0ed2 dir: /libc/src/islower.c/
/* See LICENSE file for copyright and license details. */ #define __USE_MACROS #include <ctype.h> #undef islower int islower(int c) { return _ctype[(unsigned char) c] & _L; }