ref: eaa85a83fce66986a894cda17722072840a392d9
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); }