ref: 08afb480ac4b4d52db6a27216aaa1bca1287565c
dir: /libc/src/isalpha.c/
/* See LICENSE file for copyright and license details. */ #define __USE_MACROS #include <ctype.h> #undef isalpha int isalpha(int c) { return _ctype[(unsigned char) c] & (_U|_L); }